diff --git a/cc.config.json b/cc.config.json
index dacad28ce8b..76b967b6e94 100644
--- a/cc.config.json
+++ b/cc.config.json
@@ -125,6 +125,9 @@
                 "MARIONETTE": true
             }
         },
+        "_experimental-animation-internals": {
+            "modules": ["_experimental-animation-internals"]
+        },
         "custom-pipeline": { "modules": ["custom-pipeline"] }
     },
     "moduleOverrides": [
diff --git a/cocos/core/animation/_experimental-animation-internals.ts b/cocos/core/animation/_experimental-animation-internals.ts
new file mode 100644
index 00000000000..e36b32f5b85
--- /dev/null
+++ b/cocos/core/animation/_experimental-animation-internals.ts
@@ -0,0 +1,5 @@
+// These bindings are exported for internal usages only.
+
+export { exoticAnimationTag } from './animation-clip';
+export { ExoticAnimation } from './exotic-animation/exotic-animation';
+export { RealArrayTrack } from './tracks/array-track';
diff --git a/cocos/core/animation/index.ts b/cocos/core/animation/index.ts
index c6188e45311..8567e8a7dc4 100644
--- a/cocos/core/animation/index.ts
+++ b/cocos/core/animation/index.ts
@@ -31,7 +31,7 @@ legacyCC.easing = easing;
 export * from '../curves/bezier';
 export { easing };
 export * from './animation-curve';
-export { AnimationClip, exoticAnimationTag } from './animation-clip';
+export { AnimationClip } from './animation-clip';
 export * from './animation-manager';
 export {
     AnimationState,
@@ -43,8 +43,3 @@ export {
 export * from './transform-utils';
 export { animation };
 export type { ILerpable } from './types';
-
-// For runtime create animation clip.
-export * from './exotic-animation/exotic-animation';
-export * from './tracks/track';
-export * from './tracks/array-track';
diff --git a/editor/engine-features/render-config.json b/editor/engine-features/render-config.json
index 6f2f8eb65dc..3adafa1733f 100644
--- a/editor/engine-features/render-config.json
+++ b/editor/engine-features/render-config.json
@@ -229,6 +229,13 @@
             "wechatPlugin": false,
             "category": "animation"
         },
+        "_experimental-animation-internals": {
+            "default": [],
+            "label": "i18n:ENGINE.features._experimental_animation_internals.label",
+            "description": "i18n:ENGINE.features._experimental_animation_internals.description",
+            "wechatPlugin": false,
+            "category": "_experimental_internals"
+        },
         "custom-pipeline": {
             "default": [],
             "label": "i18n:ENGINE.features.custom_pipeline.label",
@@ -248,6 +255,10 @@
         "animation": {
             "label": "i18n:ENGINE.features.categories.animation.label",
             "description": "i18n:ENGINE.features.categories.animation.description"
+        },
+        "_experimental_internals": {
+            "label": "i18n:ENGINE.features.categories._experimental_internals.label",
+            "description": "i18n:ENGINE.features.categories._experimental_internals.description"
         }
     }
 }
diff --git a/editor/i18n/en/localization.js b/editor/i18n/en/localization.js
index 0dae920cc1e..c92ab9d35e3 100755
--- a/editor/i18n/en/localization.js
+++ b/editor/i18n/en/localization.js
@@ -782,6 +782,14 @@ module.exports = {
                 label: 'Animation',
                 description: 'Animation System.',
             },
+            _experimental_internals: {
+                label: '(Experimental)Internal interfaces',
+                description:
+                    '(Experimental)Export internal interfaces. ' +
+                    'Features under this category might be used by certain external libraries that are tightly related to engine. ' +
+                    'These features are highly coupled with engine editions, undocumented, and ' +
+                    'no compatibilities are guaranteed.',
+            },
         },
         core: {
             label: "Core",
@@ -935,6 +943,10 @@ module.exports = {
             label: "Custom Render Pipeline (Experimental)",
             description: "Enable custom render pipeline",
         },
+        _experimental_animation_internals: {
+            label: "(Experimental)Animation Internals",
+            description: "(Experimental)Export animation internal interfaces.",
+        },
     },
     renderable_2d: {
         srcBlendFactor: 'Specifies the source blend mode, <br>it will clone a new material object.',
diff --git a/editor/i18n/zh/localization.js b/editor/i18n/zh/localization.js
index 3b68368e219..9d707148f10 100755
--- a/editor/i18n/zh/localization.js
+++ b/editor/i18n/zh/localization.js
@@ -763,6 +763,12 @@ module.exports = {
                 label: '动画',
                 description: '动画系统。',
             },
+            _experimental_internals: {
+                label: '（实验性）内部接口',
+                description:
+                    '（实验性）导出内部接口。此分类下的功能可能会被某些与引擎紧密相关的外部库使用。' +
+                    '这些功能和引擎版本高度耦合，无明确文档并不保证任何兼容性。',
+            },
         },
         core: {
             label: "核心功能",
@@ -916,6 +922,10 @@ module.exports = {
             label: "自定义渲染管线（实验）",
             description: "启用自定义渲染管线。",
         },
+        _experimental_animation_internals: {
+            label: "（实验性）内部动画接口",
+            description: "（实验性）导出内部动画接口。",
+        },
     },
     renderable_2d: {
         srcBlendFactor: '指定源的混合模式，这会克隆一个新的材质对象，注意这带来的性能和内存损耗',
diff --git a/exports/_experimental-animation-internals.ts b/exports/_experimental-animation-internals.ts
new file mode 100644
index 00000000000..df6f78ea84b
--- /dev/null
+++ b/exports/_experimental-animation-internals.ts
@@ -0,0 +1,7 @@
+import legacyCC from '../predefine';
+
+import * as internals from '../cocos/core/animation/_experimental-animation-internals';
+
+Object.assign(legacyCC.internal, {
+    animation: internals,
+});