diff --git a/src/app/panels/chart/IDatasetChartStrategy.hpp b/src/app/panels/chart/IDatasetChartStrategy.hpp
new file mode 100644
index 0000000..7fdc240
--- /dev/null
+++ b/src/app/panels/chart/IDatasetChartStrategy.hpp
@@ -0,0 +1,29 @@
+#pragma once
+#include <map>
+#include <memory>
+#include <string>
+namespace geopro::app {
+
+class DatasetDetailPage;  // 前置
+
+// dd 类型驱动的图表策略：决定某 ddCode 的详情页如何加载/渲染。
+struct IDatasetChartStrategy {
+    virtual ~IDatasetChartStrategy() = default;
+    virtual std::string ddCode() const = 0;
+};
+
+class ChartStrategyRegistry {
+public:
+    void add(std::unique_ptr<IDatasetChartStrategy> s) {
+        const std::string code = s->ddCode();
+        map_[code] = std::move(s);
+    }
+    IDatasetChartStrategy* find(const std::string& ddCode) const {
+        auto it = map_.find(ddCode);
+        return it == map_.end() ? nullptr : it->second.get();
+    }
+    bool supports(const std::string& ddCode) const { return map_.count(ddCode) > 0; }
+private:
+    std::map<std::string, std::unique_ptr<IDatasetChartStrategy>> map_;
+};
+}  // namespace geopro::app
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 6e60a4e..8db9c60 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -80,4 +80,7 @@ target_sources(geopro_tests PRIVATE render/test_terrain.cpp)
 target_link_libraries(geopro_tests PRIVATE geopro_render ${VTK_LIBRARIES})
 vtk_module_autoinit(TARGETS geopro_tests MODULES ${VTK_LIBRARIES})
 
+target_include_directories(geopro_tests PRIVATE ${CMAKE_SOURCE_DIR}/src/app)
+target_sources(geopro_tests PRIVATE app/test_chart_strategy_registry.cpp)
+
 add_subdirectory(spike)   # spike S3: banded contour 渲染验证
diff --git a/tests/app/test_chart_strategy_registry.cpp b/tests/app/test_chart_strategy_registry.cpp
new file mode 100644
index 0000000..ad6da01
--- /dev/null
+++ b/tests/app/test_chart_strategy_registry.cpp
@@ -0,0 +1,14 @@
+#include <gtest/gtest.h>
+#include "panels/chart/IDatasetChartStrategy.hpp"
+using namespace geopro::app;
+namespace {
+struct Fake : IDatasetChartStrategy { std::string ddCode() const override { return "dd_inversion_data"; } };
+}
+TEST(ChartStrategyRegistry, FindsRegisteredAndDegradesUnknown) {
+    ChartStrategyRegistry reg;
+    reg.add(std::make_unique<Fake>());
+    EXPECT_TRUE(reg.supports("dd_inversion_data"));
+    EXPECT_NE(reg.find("dd_inversion_data"), nullptr);
+    EXPECT_FALSE(reg.supports("dd_unknown"));
+    EXPECT_EQ(reg.find("dd_unknown"), nullptr);
+}