diff --git a/packages/core/src/modules/cell.ts b/packages/core/src/modules/cell.ts
index d7d6293..2988c71 100644
--- a/packages/core/src/modules/cell.ts
+++ b/packages/core/src/modules/cell.ts
@@ -738,10 +738,6 @@ export function updateCell(
     }
     curv ||= {};
     const fontSize = curv.fs || 10;
-    delete curv.fs;
-    delete curv.f;
-    delete curv.v;
-    delete curv.m;
 
     if (!curv.ct) {
       curv.ct = {};
@@ -749,7 +745,14 @@ export function updateCell(
     }
 
     curv.ct.t = "inlineStr";
-    curv.ct.s = convertSpanToShareString($input!.querySelectorAll("span"));
+    curv.ct.s = convertSpanToShareString(
+      $input!.querySelectorAll("span"),
+      curv
+    );
+    delete curv.fs;
+    delete curv.f;
+    delete curv.v;
+    delete curv.m;
     curv.fs = fontSize;
     if (isCopyVal) {
       curv.ct.s = [
diff --git a/packages/core/src/modules/inline-string.ts b/packages/core/src/modules/inline-string.ts
index df01abe..99ba47f 100644
--- a/packages/core/src/modules/inline-string.ts
+++ b/packages/core/src/modules/inline-string.ts
@@ -58,7 +58,7 @@ export function getInlineStringNoStyle(r: number, c: number, data: CellMatrix) {
   return "";
 }
 
-export function convertCssToStyleList(cssText: string) {
+export function convertCssToStyleList(cssText: string, originCell: Cell) {
   if (_.isEmpty(cssText)) {
     return {};
   }
@@ -66,12 +66,12 @@ export function convertCssToStyleList(cssText: string) {
 
   const styleList: CellStyle = {
     // ff: locale_fontarray[0], // font family
-    fc: "#000000", // font color
-    fs: 10, // font size
-    cl: 0, // strike
-    un: 0, // underline
-    bl: 0, // blod
-    it: 0, // italic
+    fc: originCell.fc || "#000000", // font color
+    fs: originCell.fs || 10, // font size
+    cl: originCell.cl || 0, // strike
+    un: originCell.un || 0, // underline
+    bl: originCell.bl || 0, // blod
+    it: originCell.it || 0, // italic
   };
   cssTextArray.forEach((s) => {
     s = s.toLowerCase();
@@ -80,16 +80,12 @@ export function convertCssToStyleList(cssText: string) {
     if (key === "font-weight") {
       if (value === "bold") {
         styleList.bl = 1;
-      } else {
-        styleList.bl = 0;
       }
     }
 
     if (key === "font-style") {
       if (value === "italic") {
         styleList.it = 1;
-      } else {
-        styleList.it = 0;
       }
     }
 
@@ -130,14 +126,20 @@ export function convertCssToStyleList(cssText: string) {
   return styleList;
 }
 
-// eslint-disable-next-line no-undef
-export function convertSpanToShareString($dom: NodeListOf<HTMLSpanElement>) {
+export function convertSpanToShareString(
+  // eslint-disable-next-line no-undef
+  $dom: NodeListOf<HTMLSpanElement>,
+  originCell: Cell
+) {
   const styles: CellStyle[] = [];
   let preStyleList: Cell;
   let preStyleListString = null;
   for (let i = 0; i < $dom.length; i += 1) {
     const span = $dom[i];
-    const styleList = convertCssToStyleList(span.style.cssText) as Cell;
+    const styleList = convertCssToStyleList(
+      span.style.cssText,
+      originCell
+    ) as Cell;
 
     const curStyleListString = JSON.stringify(styleList);
     // let v = span.innerHTML;