diff --git a/src/pages/playground/components/ground-embedding.tsx b/src/pages/playground/components/ground-embedding.tsx
index 59fde07d..ad055e40 100644
--- a/src/pages/playground/components/ground-embedding.tsx
+++ b/src/pages/playground/components/ground-embedding.tsx
@@ -131,6 +131,27 @@ const GroundEmbedding: React.FC<MessageProps> = forwardRef((props, ref) => {
     };
   });
 
+  const normalize2D = (data: number[][]) => {
+    const dim = data[0].length;
+    const mins = Array(dim).fill(Infinity);
+    const maxs = Array(dim).fill(-Infinity);
+
+    for (const row of data) {
+      for (let i = 0; i < dim; i++) {
+        mins[i] = Math.min(mins[i], row[i]);
+        maxs[i] = Math.max(maxs[i], row[i]);
+      }
+    }
+
+    return data.map((row) =>
+      row.map((val, i) => {
+        const range = maxs[i] - mins[i];
+        if (range === 0) return 0;
+        return ((val - mins[i]) / range) * 2 - 1;
+      })
+    );
+  };
+
   const viewCodeContent = useMemo(() => {
     console.log('viewCodeContent:', embeddingData.copyValue);
     return generateEmbeddingCode({
@@ -165,7 +186,9 @@ const GroundEmbedding: React.FC<MessageProps> = forwardRef((props, ref) => {
           ...fileList.map((item) => item.text).filter((item) => item)
         ];
 
-        const list = pcadata.map((item: number[], index: number) => {
+        const normalizedData = normalize2D(pcadata);
+
+        const list = normalizedData.map((item: number[], index: number) => {
           return {
             value: item,
             name: index + 1,