diff --git a/resource/ocr_config.json b/resource/ocr_config.json
new file mode 100644
index 0000000000..04bfe0c4fb
--- /dev/null
+++ b/resource/ocr_config.json
@@ -0,0 +1,76 @@
+{
+    "equivalence_classes": [
+        [
+            "あ",
+            "ぁ"
+        ],
+        [
+            "い",
+            "ぃ"
+        ],
+        [
+            "う",
+            "ぅ"
+        ],
+        [
+            "え",
+            "ぇ"
+        ],
+        [
+            "お",
+            "ぉ"
+        ],
+        [
+            "つ",
+            "っ"
+        ],
+        [
+            "や",
+            "ゃ"
+        ],
+        [
+            "ゆ",
+            "ゅ"
+        ],
+        [
+            "よ",
+            "ょ"
+        ],
+        [
+            "ア",
+            "ァ"
+        ],
+        [
+            "イ",
+            "ィ"
+        ],
+        [
+            "ウ",
+            "ゥ"
+        ],
+        [
+            "エ",
+            "ェ"
+        ],
+        [
+            "オ",
+            "ォ"
+        ],
+        [
+            "ツ",
+            "ッ"
+        ],
+        [
+            "ヤ",
+            "ャ"
+        ],
+        [
+            "ユ",
+            "ュ"
+        ],
+        [
+            "ヨ",
+            "ョ"
+        ]
+    ]
+}
\ No newline at end of file
diff --git a/src/MaaCore/Config/Miscellaneous/OcrConfig.cpp b/src/MaaCore/Config/Miscellaneous/OcrConfig.cpp
new file mode 100644
index 0000000000..251c7a475d
--- /dev/null
+++ b/src/MaaCore/Config/Miscellaneous/OcrConfig.cpp
@@ -0,0 +1,28 @@
+#include "OcrConfig.h"
+
+#include <meojson/json.hpp>
+
+#include "Utils/Logger.hpp"
+
+std::string asst::OcrConfig::process_equivalence_class(const std::string& str)
+{
+    std::string result = str;
+    for (const auto& eq_class : m_eq_classes) {
+        ranges::for_each(eq_class.begin() + 1, eq_class.end(), [&](const std::string& elem) {
+            utils::string_replace_all_in_place(result, elem, eq_class.front());
+        });
+    }
+    return result;
+}
+
+bool asst::OcrConfig::parse(const json::value& json)
+{
+    for (const json::value& eq_class : json.at("equivalence_classes").as_array()) {
+        equivalence_class eq_class_tmp;
+        for (const json::value& eq_element : eq_class.as_array()) {
+            eq_class_tmp.emplace_back(eq_element.as_string());
+        }
+        m_eq_classes.emplace_back(std::move(eq_class_tmp));
+    }
+    return true;
+}
diff --git a/src/MaaCore/Config/Miscellaneous/OcrConfig.h b/src/MaaCore/Config/Miscellaneous/OcrConfig.h
new file mode 100644
index 0000000000..e4aed6f819
--- /dev/null
+++ b/src/MaaCore/Config/Miscellaneous/OcrConfig.h
@@ -0,0 +1,32 @@
+#pragma once
+
+#include "Config/AbstractConfig.h"
+
+#include "Utils/Ranges.hpp"
+#include <algorithm>
+#include <numeric>
+#include <string>
+#include <unordered_set>
+#include <vector>
+
+#include "Common/AsstTypes.h"
+
+namespace asst
+{
+    class OcrConfig final : public SingletonHolder<OcrConfig>, public AbstractConfig
+    {
+    public:
+        virtual ~OcrConfig() override = default;
+
+        std::string process_equivalence_class(const std::string& str);
+
+    protected:
+        virtual bool parse(const json::value& json) override;
+
+        using equivalence_class = std::vector<std::string>;
+
+        std::vector<equivalence_class> m_eq_classes;
+    };
+    inline static auto& OcrData = OcrConfig::get_instance();
+
+} // namespace asst
diff --git a/src/MaaCore/Config/ResourceLoader.cpp b/src/MaaCore/Config/ResourceLoader.cpp
index fb265bb74b..7203c27f65 100644
--- a/src/MaaCore/Config/ResourceLoader.cpp
+++ b/src/MaaCore/Config/ResourceLoader.cpp
@@ -13,6 +13,7 @@
 #include "Miscellaneous/RecruitConfig.h"
 #include "Miscellaneous/StageDropsConfig.h"
 #include "Miscellaneous/TilePack.h"
+#include "Miscellaneous/OcrConfig.h"
 #include "Roguelike/RoguelikeCopilotConfig.h"
 #include "Roguelike/RoguelikeRecruitConfig.h"
 #include "Roguelike/RoguelikeShoppingConfig.h"
@@ -64,6 +65,7 @@ bool asst::ResourceLoader::load(const std::filesystem::path& path)
         LoadResourceAndCheckRet(RoguelikeRecruitConfig, "roguelike"_p / "recruitment.json"_p);
         LoadResourceAndCheckRet(RoguelikeShoppingConfig, "roguelike"_p / "shopping.json"_p);
         LoadResourceAndCheckRet(BattleDataConfig, "battle_data.json"_p);
+        LoadResourceAndCheckRet(OcrConfig, "ocr_config.json"_p);
 
         /* load resource with json and template files*/
         LoadResourceWithTemplAndCheckRet(TaskData, "tasks.json"_p, "template"_p);
diff --git a/src/MaaCore/MaaCore.vcxproj b/src/MaaCore/MaaCore.vcxproj
index 763116e97b..519770df00 100644
--- a/src/MaaCore/MaaCore.vcxproj
+++ b/src/MaaCore/MaaCore.vcxproj
@@ -29,6 +29,7 @@
     <ClInclude Include="Common\AsstTypes.h" />
     <ClInclude Include="Common\AsstVersion.h" />
     <ClInclude Include="Config\Miscellaneous\AvatarCacheManager.h" />
+    <ClInclude Include="Config\Miscellaneous\OcrConfig.h" />
     <ClInclude Include="Config\Miscellaneous\SSSCopilotConfig.h" />
     <ClInclude Include="Controller.h" />
     <ClInclude Include="InstHelper.h" />
@@ -159,6 +160,7 @@
     <ClCompile Include="Assistant.cpp" />
     <ClCompile Include="AsstCaller.cpp" />
     <ClCompile Include="Config\Miscellaneous\AvatarCacheManager.cpp" />
+    <ClCompile Include="Config\Miscellaneous\OcrConfig.cpp" />
     <ClCompile Include="Config\Miscellaneous\SSSCopilotConfig.cpp" />
     <ClCompile Include="Controller.cpp" />
     <ClCompile Include="InstHelper.cpp" />
diff --git a/src/MaaCore/MaaCore.vcxproj.filters b/src/MaaCore/MaaCore.vcxproj.filters
index a6c1c8f235..5aea742d34 100644
--- a/src/MaaCore/MaaCore.vcxproj.filters
+++ b/src/MaaCore/MaaCore.vcxproj.filters
@@ -507,6 +507,9 @@
     <ClInclude Include="Task\Reclamation\ReclamationControlTask.h">
       <Filter>源文件\Task\Reclamation</Filter>
     </ClInclude>
+    <ClInclude Include="Config\Miscellaneous\OcrConfig.h">
+      <Filter>源文件\Config\Miscellaneous</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="Vision\AbstractImageAnalyzer.cpp">
@@ -836,5 +839,8 @@
     <ClCompile Include="Task\Reclamation\ReclamationControlTask.cpp">
       <Filter>源文件\Task\Reclamation</Filter>
     </ClCompile>
+    <ClCompile Include="Config\Miscellaneous\OcrConfig.cpp">
+      <Filter>源文件\Config\Miscellaneous</Filter>
+    </ClCompile>
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/src/MaaCore/Vision/OcrImageAnalyzer.cpp b/src/MaaCore/Vision/OcrImageAnalyzer.cpp
index 120261f822..d0c311d138 100644
--- a/src/MaaCore/Vision/OcrImageAnalyzer.cpp
+++ b/src/MaaCore/Vision/OcrImageAnalyzer.cpp
@@ -4,6 +4,7 @@
 #include <unordered_map>
 
 #include "Config/Miscellaneous/OcrPack.h"
+#include "Config/Miscellaneous/OcrConfig.h"
 #include "Config/TaskData.h"
 #include "Utils/Logger.hpp"
 
@@ -16,7 +17,7 @@ bool asst::OcrImageAnalyzer::analyze()
     std::vector<TextRectProc> preds_vec;
 
     preds_vec.emplace_back([](TextRect& tr) -> bool {
-        tr.text = equivalent_class_preprocess(tr.text);
+        tr.text = OcrData.process_equivalence_class(tr.text);
         return true;
     });
 
@@ -98,7 +99,7 @@ void asst::OcrImageAnalyzer::set_use_cache(bool is_use) noexcept
 
 void asst::OcrImageAnalyzer::set_required(std::vector<std::string> required) noexcept
 {
-    ranges::for_each(required, [](std::string& str) { str = equivalent_class_preprocess(str); });
+    ranges::for_each(required, [](std::string& str) { str = OcrData.process_equivalence_class(str); });
     m_required = std::move(required);
 }
 
@@ -106,8 +107,8 @@ void asst::OcrImageAnalyzer::set_replace(const std::unordered_map<std::string, s
 {
     m_replace = {};
     for (auto&& [key, val] : replace) {
-        auto new_key = equivalent_class_preprocess(key);
-        auto new_val = equivalent_class_preprocess(val);
+        auto new_key = OcrData.process_equivalence_class(key);
+        auto new_val = OcrData.process_equivalence_class(val);
         m_replace[new_key] = new_val;
     }
 }
@@ -135,44 +136,6 @@ std::vector<asst::TextRect>& asst::OcrImageAnalyzer::get_result() noexcept
     return m_ocr_result;
 }
 
-std::string asst::OcrImageAnalyzer::equivalent_class_preprocess(const std::string& in)
-{
-    using equivalent_class = std::vector<std::string>;
-    static const std::vector<equivalent_class> classes {
-            // hiragana
-            { "あ", "ぁ" },
-            { "い", "ぃ" },
-            { "う", "ぅ" },
-            { "え", "ぇ" },
-            { "お", "ぉ" },
-            { "つ", "っ" },
-            { "や", "ゃ" },
-            { "ゆ", "ゅ" },
-            { "よ", "ょ" },
-            { "わ", "ゎ" },
-            // katakana
-            { "ア", "ァ" },
-            { "イ", "ィ" },
-            { "ウ", "ゥ" },
-            { "エ", "ェ" },
-            { "オ", "ォ" },
-            { "ツ", "ッ" },
-            { "ヤ", "ャ" },
-            { "ユ", "ュ" },
-            { "ヨ", "ョ" },
-            { "ワ", "ヮ" },
-    }; // TODO: store this into a file
-
-    auto result = in;
-    for (const auto& cls : classes) {
-        // replace the elements in group into the first one
-        ranges::for_each(cls.begin() + 1, cls.end(),
-                      [&](const std::string& elem) { utils::string_replace_all_in_place(result, elem, cls.front()); });
-    }
-
-    return result;
-}
-
 void asst::OcrImageAnalyzer::set_task_info(std::shared_ptr<TaskInfo> task_ptr)
 {
     set_task_info(*std::dynamic_pointer_cast<OcrTaskInfo>(task_ptr));
diff --git a/src/MaaCore/Vision/OcrImageAnalyzer.h b/src/MaaCore/Vision/OcrImageAnalyzer.h
index 139a3ac97a..90e1f8037a 100644
--- a/src/MaaCore/Vision/OcrImageAnalyzer.h
+++ b/src/MaaCore/Vision/OcrImageAnalyzer.h
@@ -38,9 +38,6 @@ namespace asst
         virtual const std::vector<TextRect>& get_result() const noexcept;
         virtual std::vector<TextRect>& get_result() noexcept;
 
-        // normalize similar characters into the same one
-        static std::string equivalent_class_preprocess(const std::string& in);
-
     protected:
         virtual void set_task_info(OcrTaskInfo task_info) noexcept;