diff --git a/frameworks/kits/taihe/idl/ohos.multimedia.image.image.taihe b/frameworks/kits/taihe/idl/ohos.multimedia.image.image.taihe
index b2944a68c7f44ece2f65320bf0521de45fb720b0..e72197ec191de2b099bf33b13bb2d73b8fe7e234 100644
--- a/frameworks/kits/taihe/idl/ohos.multimedia.image.image.taihe
+++ b/frameworks/kits/taihe/idl/ohos.multimedia.image.image.taihe
@@ -43,8 +43,8 @@ enum ResolutionQuality: i32 {
 }
 
 struct Size {
-  width: i32;
-  height: i32;
+  width: f64;
+  height: f64;
 }
 
 enum PropertyKey: String {
@@ -280,8 +280,8 @@ enum AllocatorType: i32 {
 
 struct Region {
   size: Size;
-  x: i32;
-  y: i32;
+  x: f64;
+  y: f64;
 }
 
 // Can't use struct because struct is copied instead of referenced, so data changes to "pixels" in C++ will not be reflected in ArkTS
@@ -298,8 +298,8 @@ interface PositionArea {
 
 struct ImageInfo {
   size: Size;
-  density: i32;
-  stride: i32;
+  density: f64;
+  stride: f64;
   pixelFormat: PixelMapFormat;
   alphaType: AlphaType;
   mimeType: String;
@@ -313,8 +313,8 @@ enum CropAndScaleStrategy: i32 {
 
 struct PackingOption {
   format: String;
-  quality: i32;
-  bufferSize: Optional<i32>;
+  quality: f64;
+  bufferSize: Optional<f64>;
   desiredDynamicRange: Optional<PackingDynamicRange>;
   needsPackProperties: Optional<bool>;
 }
@@ -325,15 +325,15 @@ struct ImagePropertyOptions {
 }
 
 struct DecodingOptions {
-  index: Optional<i32>;
-  sampleSize: Optional<i32>;
-  rotate: Optional<i32>;
+  index: Optional<f64>;
+  sampleSize: Optional<f64>;
+  rotate: Optional<f64>;
   editable: Optional<bool>;
   desiredSize: Optional<Size>;
   desiredRegion: Optional<Region>;
   desiredPixelFormat: Optional<PixelMapFormat>;
   photoDesiredPixelFormat: Optional<PixelMapFormat>; // not exposed to the user
-  fitDensity: Optional<i32>;
+  fitDensity: Optional<f64>;
   fillColor: Optional<i32>; // not exposed to the user
   SVGResize: Optional<i32>; // not exposed to the user
   desiredColorSpace: Optional<@sts_type("colorSpaceManager.ColorSpaceManager") Opaque>;
@@ -474,14 +474,14 @@ interface ImageSource {
   GetImplPtr(): i64;
   @gen_async("getImageInfo")
   @gen_promise("getImageInfoPromiseWithIndex")
-  GetImageInfoSyncWithIndex(index: u32): ImageInfo;
+  GetImageInfoSyncWithIndex(index: f64): ImageInfo;
 
   @gen_async("getImageInfo")
   @gen_promise("getImageInfoPromise")
   GetImageInfoSync(): ImageInfo;
 
-  @!sts_inject_into_interface("getImageInfoSync(index: int | undefined): ImageInfo;")
-  @!sts_inject_into_class("""getImageInfoSync(index: int | undefined): ImageInfo {
+  @!sts_inject_into_interface("getImageInfoSync(index: double | undefined): ImageInfo;")
+  @!sts_inject_into_class("""getImageInfoSync(index: double | undefined): ImageInfo {
             if (index === undefined) {
                 return this.getImageInfoSync();
             } else {
@@ -490,8 +490,8 @@ interface ImageSource {
         }
   """)
 
-  @!sts_inject_into_interface("getImageInfo(index: int | undefined): Promise<ImageInfo>;")
-  @!sts_inject_into_class("""getImageInfo(index: int | undefined): Promise<ImageInfo> {
+  @!sts_inject_into_interface("getImageInfo(index: double | undefined): Promise<ImageInfo>;")
+  @!sts_inject_into_class("""getImageInfo(index: double | undefined): Promise<ImageInfo> {
             if (index === undefined) {
                 return this.getImageInfoPromise();
             } else {
diff --git a/frameworks/kits/taihe/src/image_taihe.cpp b/frameworks/kits/taihe/src/image_taihe.cpp
index 2bc829fd574407890d20799e456939752ea615a5..10113edfe1e2a4b3d135a3c783053905c654fcbb 100644
--- a/frameworks/kits/taihe/src/image_taihe.cpp
+++ b/frameworks/kits/taihe/src/image_taihe.cpp
@@ -89,9 +89,13 @@ Size ImageImpl::GetSize()
         return result;
     }
 
-    if (nativeImage_->GetSize(result.width, result.height) != OHOS::Media::SUCCESS) {
+    int32_t width = NUM0;
+    int32_t height = NUM0;
+    if (nativeImage_->GetSize(width, height) != OHOS::Media::SUCCESS) {
         IMAGE_LOGE("Image native get size failed");
     }
+    result.width = static_cast<double>(width);
+    result.height = static_cast<double>(height);
     return result;
 }