diff --git a/CMakeLists.txt b/CMakeLists.txt
index d87b059293271588455347e9a4575a93e8fd1e0b..5034b36eb0c4c905cfe25922cc9762ab417c3604 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -98,7 +98,7 @@ set(CPACK_NSIS_DELETE_ICONS_EXTRA
     Delete '$DESKTOP\\\\${MYNAME}.lnk'"
 )
 
-set(SUPPORTED_MESH_EXTS .mesh .meshb .obj .step .stp .vtk .m .ply )
+set(SUPPORTED_MESH_EXTS .mesh .meshb .obj .step .stp .iges .igs .vtk .m .ply )
 set(CPACK_NSIS_EXTRA_INSTALL_COMMANDS "")
 set(CPACK_NSIS_EXTRA_UNINSTALL_COMMANDS "")
 
diff --git a/plugins/io/CMakeLists.txt b/plugins/io/CMakeLists.txt
index ff3afb521fd08e57e28cd8ffbd3956669d3bcbe3..fbfb5ae9130bb669a624e02d42cdee81057529fb 100644
--- a/plugins/io/CMakeLists.txt
+++ b/plugins/io/CMakeLists.txt
@@ -3,4 +3,5 @@ add_subdirectory(MModelPlugin)
 add_subdirectory(StepModelPlugin)
 add_subdirectory(VtkLegacyModelPlugin)
 add_subdirectory(MeshMeditModelPlugin)
-add_subdirectory(PlyModelPlugin)
\ No newline at end of file
+add_subdirectory(PlyModelPlugin)
+add_subdirectory(IgesModelPlugin)
diff --git a/plugins/io/IgesModelPlugin/CMakeLists.txt b/plugins/io/IgesModelPlugin/CMakeLists.txt
new file mode 100644
index 0000000000000000000000000000000000000000..9a34f8b7ecbc8e2543377d8384c6c14d6d43fa2c
--- /dev/null
+++ b/plugins/io/IgesModelPlugin/CMakeLists.txt
@@ -0,0 +1,7 @@
+precess_add_io_plugin(IgesModelPlugin
+	SOURCES "IgesModelHandler.cpp"
+	PLUGIN_H "IgesModelPlugin.h"
+)
+precess_plugin_link_libraries(IgesModelPlugin TKDEIGES)
+
+add_subdirectory(test)
diff --git a/plugins/io/IgesModelPlugin/IgesModelHandler.cpp b/plugins/io/IgesModelPlugin/IgesModelHandler.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..dac9ac6d118b25da087964dad16221beb97696a8
--- /dev/null
+++ b/plugins/io/IgesModelPlugin/IgesModelHandler.cpp
@@ -0,0 +1,96 @@
+/**
+ * @file IgesModelHandler.cpp
+ * @brief IGES 模型文件处理器实现
+ * @author 范成通
+ */
+#include "IgesModelHandler.h"
+#include "ArgType.h"
+#include "ModelData.h"
+#include "SplineData.h"
+
+#include <IGESControl_Reader.hxx>
+#include <IGESControl_Writer.hxx>
+#include <spdlog/spdlog.h>
+
+namespace systems::io {
+using core::ArgType;
+
+/**
+ * @brief 读取 IGES 文件
+ */
+std::unique_ptr<ModelData> IgesModelHandler::read_model(const fs::path& path,
+    const std::vector<std::any>& args)
+{
+    IGESControl_Reader reader;
+    IFSelect_ReturnStatus stat;
+    // 使用UTF-8编码字符串路径，配合C++17 std::filesystem处理中文路径
+    stat = reader.ReadFile(path.u8string().c_str());
+    if (stat != IFSelect_RetDone) {
+        spdlog::error("Failed to read IGES file: {}", path.string());
+        return nullptr;
+    }
+    reader.TransferRoots();
+
+    // SplineData - 和 STEP 一样保存为 BRep 边界表示
+    auto spline_data = std::make_unique<SplineData>();
+    spline_data->rootShape = std::make_unique<TopoDS_Shape>(reader.OneShape());
+
+    // ModelData
+    auto model_data = std::make_unique<ModelData>(std::move(spline_data));
+    model_data->model_name_ = path.filename().string();
+
+    return model_data;
+}
+
+/**
+ * @brief 写入 IGES 文件
+ */
+void IgesModelHandler::write_model(const ModelData& data, const fs::path& path,
+    const std::vector<std::any>& args)
+{
+    auto spline_data = data.asSplineData();
+    if (!spline_data) {
+        spdlog::error("IgesModelHandler only supports writing SplineData.");
+        return;
+    }
+
+    IGESControl_Writer writer;
+
+    // 将形状添加到写入器
+    Standard_Boolean transferStatus = writer.AddShape(*spline_data->rootShape);
+
+    if (!transferStatus) {
+        spdlog::error("Failed when transferring shape to IGES writer.");
+        return;
+    }
+
+    writer.ComputeModel();
+
+    // 写入文件，使用UTF-8编码字符串路径
+    Standard_Boolean writeStatus = writer.Write(path.u8string().c_str());
+
+    if (!writeStatus) {
+        spdlog::error("Failed to write IGES file: {}", path.string());
+        return;
+    }
+
+    spdlog::info("Successfully wrote IGES file: {}", path.string());
+}
+
+/**
+ * @brief 读取参数 - IGES 读取不需要额外参数，返回空列表
+ */
+std::vector<ArgType> IgesModelHandler::read_args_type() const
+{
+    return { };
+}
+
+/**
+ * @brief 写入参数 - IGES 写入不需要额外参数，返回空列表
+ */
+std::vector<ArgType> IgesModelHandler::write_args_type() const
+{
+    return { };
+}
+
+} // namespace systems::io
\ No newline at end of file
diff --git a/plugins/io/IgesModelPlugin/IgesModelHandler.h b/plugins/io/IgesModelPlugin/IgesModelHandler.h
new file mode 100644
index 0000000000000000000000000000000000000000..974c0837c1eb6ac2e163cef8f9fd6ae783659922
--- /dev/null
+++ b/plugins/io/IgesModelPlugin/IgesModelHandler.h
@@ -0,0 +1,30 @@
+/**
+ * @file IgesModelHandler.h
+ * @brief IGES 模型文件处理器
+ * @author 范成通
+ */
+#ifndef IGES_MODEL_HANDLER_H
+#define IGES_MODEL_HANDLER_H
+#include "ModelIOHandler.h"
+
+class ModelData;
+
+namespace systems::io {
+/**
+ * @brief IGES 文件格式处理器，读取和写入 IGES 文件
+ */
+class IgesModelHandler : public ModelIOHandler {
+public:
+    IgesModelHandler() = default;
+    ~IgesModelHandler() override = default;
+
+    std::unique_ptr<ModelData> read_model(const fs::path& path,
+        const std::vector<std::any>& args) override;
+    void write_model(const ModelData& data, const fs::path& path,
+        const std::vector<std::any>& args) override;
+    std::vector<core::ArgType> read_args_type() const override;
+    std::vector<core::ArgType> write_args_type() const override;
+};
+
+}
+#endif // !IGES_MODEL_HANDLER_H
\ No newline at end of file
diff --git a/plugins/io/IgesModelPlugin/IgesModelPlugin.h b/plugins/io/IgesModelPlugin/IgesModelPlugin.h
new file mode 100644
index 0000000000000000000000000000000000000000..e67fb81095e61c5328d960b8f540c45fddfcc94c
--- /dev/null
+++ b/plugins/io/IgesModelPlugin/IgesModelPlugin.h
@@ -0,0 +1,25 @@
+/**
+ * @file IgesModelPlugin.h
+ * @brief IGES 文件格式读写插件
+ * @author 范成通
+ */
+#ifndef IGES_MODEL_PLUGIN_H
+#define IGES_MODEL_PLUGIN_H
+#include "HandlerCreatorDestroyerFactory.h"
+#include "IgesModelHandler.h"
+#include "PluginBase.h"
+#include <QObject>
+
+namespace systems::io {
+class IgesModelPlugin : public QObject, public PluginBase {
+    Q_OBJECT
+    Q_INTERFACES(systems::PluginBase)
+    Q_PLUGIN_METADATA(IID "com.PreCess.systems.io.IgesModelPlugin/1.0" FILE "IgesModelPlugin.json")
+private:
+    const HandlerCreatorDestroyer& getHandlerCreatorDestroyer() noexcept override final
+    {
+        return HandlerCreatorDestroyerFactory<IgesModelHandler, ModelIOHandler>::get();
+    }
+};
+}
+#endif // !IGES_MODEL_PLUGIN_H
\ No newline at end of file
diff --git a/plugins/io/IgesModelPlugin/IgesModelPlugin.json b/plugins/io/IgesModelPlugin/IgesModelPlugin.json
new file mode 100644
index 0000000000000000000000000000000000000000..f4eae0d34991a74b4a83e97dee69e0e166bbe5d4
--- /dev/null
+++ b/plugins/io/IgesModelPlugin/IgesModelPlugin.json
@@ -0,0 +1,10 @@
+{
+    "system": "ModelIOSystem",
+    "handler": {
+        "file_type": "IGES",
+        "extensions": [
+            "igs",
+            "iges"
+        ]
+    }
+}
\ No newline at end of file
diff --git a/plugins/io/IgesModelPlugin/test/CMakeLists.txt b/plugins/io/IgesModelPlugin/test/CMakeLists.txt
new file mode 100644
index 0000000000000000000000000000000000000000..753e08ada951d1880612a81a529a6364959f9935
--- /dev/null
+++ b/plugins/io/IgesModelPlugin/test/CMakeLists.txt
@@ -0,0 +1,2 @@
+precess_add_test(TestIgesModelIO TestIgesModelHandler.cpp)
+precess_test_link_libraries(TestIgesModelIO IgesModelPluginlib DataTest)
\ No newline at end of file
diff --git a/plugins/io/IgesModelPlugin/test/TestIgesModelHandler.cpp b/plugins/io/IgesModelPlugin/test/TestIgesModelHandler.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..f5ca5d03c21f3f93ddc5fd8f31e9baa4341d25d3
--- /dev/null
+++ b/plugins/io/IgesModelPlugin/test/TestIgesModelHandler.cpp
@@ -0,0 +1,199 @@
+/**
+ * @file TestIgesModelHandler.cpp
+ * @brief IGES 模型文件处理器单元测试
+ * @author PreCess Team
+ */
+#include "IgesModelHandler.h"
+#include "MeshData.h"
+#include "ModelData.h"
+#include "SplineData.h"
+#include "TempFile.h"
+#include <BRepPrimAPI_MakeBox.hxx>
+#include <BRepPrimAPI_MakeSphere.hxx>
+#include <TopoDS_Shape.hxx>
+#include <catch2/catch_test_macros.hpp>
+#include <filesystem>
+
+namespace fs = std::filesystem;
+
+/**
+ * @brief 比较两个 TopoDS_Shape 的基本属性
+ */
+static bool shapes_similar(const TopoDS_Shape& a, const TopoDS_Shape& b)
+{
+    // 比较类型
+    if (a.ShapeType() != b.ShapeType()) {
+        return false;
+    }
+
+    // 比较空状态
+    if (a.IsNull() != b.IsNull()) {
+        return false;
+    }
+
+    // 比较形状数量特性
+    if (a.NbChildren() != b.NbChildren()) {
+        return false;
+    }
+
+    return true;
+}
+
+/**
+ * @brief 创建测试：英文路径下立方体读写回环测试
+ */
+TEST_CASE("IgesModelHandler::write_model()/read_model() - 英文路径")
+{
+    systems::io::IgesModelHandler io;
+    fs::path out = core::TempFile::instance().path().string() + ".igs";
+
+    // 步骤1: 使用 OpenCASCADE 创建立方体
+    TopoDS_Shape box = BRepPrimAPI_MakeBox(10.0, 20.0, 30.0);
+    REQUIRE(!box.IsNull());
+
+    // 步骤2: 包装为 SplineData
+    auto spline_data = std::make_unique<SplineData>();
+    spline_data->rootShape = std::make_unique<TopoDS_Shape>(box);
+
+    // 步骤3: 写入 IGES 文件
+    std::unique_ptr<ModelData> model_write = std::make_unique<ModelData>(std::move(spline_data));
+    REQUIRE_NOTHROW(io.write_model(*model_write, out, { }));
+    REQUIRE(fs::exists(out));
+
+    // 步骤4: 读取 IGES 文件
+    std::unique_ptr<ModelData> model_read;
+    REQUIRE_NOTHROW(model_read = io.read_model(out, { }));
+    REQUIRE(model_read != nullptr);
+
+    // 步骤5: 验证读取的数据类型
+    const SplineData* read_spline = model_read->asSplineData();
+    REQUIRE(read_spline != nullptr);
+    REQUIRE(read_spline->rootShape != nullptr);
+    REQUIRE(!read_spline->rootShape->IsNull());
+
+    // 步骤6: IGES 读写后拓扑结构会发生变化，只需验证成功读取到有效形状即可
+    // IGES 转换后实体数量：立方体约49个，球体约14个
+}
+
+/**
+ * @brief 创建测试：中文文件名（仅文件名含中文）
+ */
+TEST_CASE("IgesModelHandler::write_model()/read_model() - 中文文件名")
+{
+    systems::io::IgesModelHandler io;
+
+    // 创建中文文件名
+    fs::path out = core::TempFile::instance().path();
+    out.replace_filename("测试_立方体_" + out.stem().string() + ".igs");
+
+    // 步骤1: 使用 OpenCASCADE 创建立方体
+    TopoDS_Shape box = BRepPrimAPI_MakeBox(15.0, 25.0, 35.0);
+    REQUIRE(!box.IsNull());
+
+    // 步骤2: 包装为 SplineData
+    auto spline_data = std::make_unique<SplineData>();
+    spline_data->rootShape = std::make_unique<TopoDS_Shape>(box);
+
+    // 步骤3: 写入 IGES 文件
+    std::unique_ptr<ModelData> model_write = std::make_unique<ModelData>(std::move(spline_data));
+    REQUIRE_NOTHROW(io.write_model(*model_write, out, { }));
+    REQUIRE(fs::exists(out));
+
+    // 步骤4: 读取 IGES 文件
+    std::unique_ptr<ModelData> model_read;
+    REQUIRE_NOTHROW(model_read = io.read_model(out, { }));
+    REQUIRE(model_read != nullptr);
+
+    // 步骤5: 验证读取的数据类型
+    const SplineData* read_spline = model_read->asSplineData();
+    REQUIRE(read_spline != nullptr);
+    REQUIRE(read_spline->rootShape != nullptr);
+    REQUIRE(!read_spline->rootShape->IsNull());
+}
+
+/**
+ * @brief 创建测试：中文完整路径（目录+文件名均含中文）
+ */
+TEST_CASE("IgesModelHandler::write_model()/read_model() - 中文完整路径")
+{
+    systems::io::IgesModelHandler io;
+
+    // 创建中文目录 + 中文文件名的完整路径
+    fs::path out = core::TempFile::instance().path();
+    out = out.parent_path() / "测试数据目录" / "子目录_模型" / ("测试_立方体_" + out.stem().string() + ".igs");
+    std::filesystem::create_directories(out.parent_path());
+
+    // 步骤1: 使用 OpenCASCADE 创建立方体
+    TopoDS_Shape box = BRepPrimAPI_MakeBox(12.0, 22.0, 32.0);
+    REQUIRE(!box.IsNull());
+
+    // 步骤2: 包装为 SplineData
+    auto spline_data = std::make_unique<SplineData>();
+    spline_data->rootShape = std::make_unique<TopoDS_Shape>(box);
+
+    // 步骤3: 写入 IGES 文件
+    std::unique_ptr<ModelData> model_write = std::make_unique<ModelData>(std::move(spline_data));
+    REQUIRE_NOTHROW(io.write_model(*model_write, out, { }));
+    REQUIRE(fs::exists(out));
+
+    // 步骤4: 读取 IGES 文件
+    std::unique_ptr<ModelData> model_read;
+    REQUIRE_NOTHROW(model_read = io.read_model(out, { }));
+    REQUIRE(model_read != nullptr);
+
+    // 步骤5: 验证读取的数据类型
+    const SplineData* read_spline = model_read->asSplineData();
+    REQUIRE(read_spline != nullptr);
+    REQUIRE(read_spline->rootShape != nullptr);
+    REQUIRE(!read_spline->rootShape->IsNull());
+}
+
+/**
+ * @brief 创建测试：球体读写回环测试
+ */
+TEST_CASE("IgesModelHandler::write_model()/read_model() - 球体测试")
+{
+    systems::io::IgesModelHandler io;
+    fs::path out = core::TempFile::instance().path().string() + "_sphere.igs";
+
+    // 步骤1: 使用 OpenCASCADE 创建球体
+    TopoDS_Shape sphere = BRepPrimAPI_MakeSphere(50.0);
+    REQUIRE(!sphere.IsNull());
+
+    // 步骤2: 包装为 SplineData
+    auto spline_data = std::make_unique<SplineData>();
+    spline_data->rootShape = std::make_unique<TopoDS_Shape>(sphere);
+
+    // 步骤3: 写入 IGES 文件
+    std::unique_ptr<ModelData> model_write = std::make_unique<ModelData>(std::move(spline_data));
+    REQUIRE_NOTHROW(io.write_model(*model_write, out, { }));
+    REQUIRE(fs::exists(out));
+
+    // 步骤4: 读取 IGES 文件
+    std::unique_ptr<ModelData> model_read;
+    REQUIRE_NOTHROW(model_read = io.read_model(out, { }));
+    REQUIRE(model_read != nullptr);
+
+    // 步骤5: 验证读取的数据类型
+    const SplineData* read_spline = model_read->asSplineData();
+    REQUIRE(read_spline != nullptr);
+    REQUIRE(read_spline->rootShape != nullptr);
+    REQUIRE(!read_spline->rootShape->IsNull());
+}
+
+/**
+ * @brief 测试：空模型写入（错误处理测试
+ */
+TEST_CASE("IgesModelHandler::write_model() - 空模型处理")
+{
+    systems::io::IgesModelHandler io;
+    fs::path out = core::TempFile::instance().path().string() + "_null.igs";
+
+    // 创建一个非 SplineData 的模型（比如 MeshData）
+    auto mesh_data = std::make_unique<MeshData>();
+    std::unique_ptr<ModelData> model = std::make_unique<ModelData>(std::move(mesh_data));
+
+    // 应该不会抛出异常，但会记录错误日志，不写入文件
+    REQUIRE_NOTHROW(io.write_model(*model, out, { }));
+    // IGES 处理器不支持 MeshData，应该不会成功写出
+}
\ No newline at end of file
diff --git a/plugins/io/StepModelPlugin/StepModelHandler.cpp b/plugins/io/StepModelPlugin/StepModelHandler.cpp
index d4d15d273025822dfd729a915caef19eca4973fa..437a2e64dce133360a5c1f9921c74901e7626609 100644
--- a/plugins/io/StepModelPlugin/StepModelHandler.cpp
+++ b/plugins/io/StepModelPlugin/StepModelHandler.cpp
@@ -15,7 +15,9 @@ namespace systems::io {
 std::unique_ptr<ModelData> StepModelHandler::read_model(const fs::path& path, const std::vector<std::any>& args)
 {
     STEPControl_Reader reader;
-    IFSelect_ReturnStatus stat = reader.ReadFile(path.string().c_str());
+    IFSelect_ReturnStatus stat;
+    // 使用UTF-8编码字符串路径，配合C++17 std::filesystem处理中文路径
+    stat = reader.ReadFile(path.u8string().c_str());
     if (stat != IFSelect_RetDone) {
         spdlog::error("Failed to read STEP file: {}", path.string());
         return nullptr;