diff --git a/packages/core/__tests__/lib/core-check.test.ts b/packages/core/__tests__/lib/core-check.test.ts
index b70e3bf..509fe87 100644
--- a/packages/core/__tests__/lib/core-check.test.ts
+++ b/packages/core/__tests__/lib/core-check.test.ts
@@ -55,6 +55,30 @@ describe("@idraw/core static check", () => {
   });
 
 
+  test('Core.check.circleDesc', () => {
+
+    expect(Core.check.circleDesc({
+      color: '#ffffff',
+    })).toStrictEqual(true);
+
+    expect(Core.check.circleDesc({
+      color: 123,
+    })).toStrictEqual(false);
+
+    expect(Core.check.circleDesc({
+      borderWidth: 10,
+      borderColor: '#123abf',
+      color: '#ffffff',
+    })).toStrictEqual(true);
+
+    expect(Core.check.circleDesc({
+      borderWidth: 10,
+      borderColor: '#123af',
+    })).toStrictEqual(false);
+ 
+  });
+
+
   test('Core.check.imageDesc', () => {
 
     expect(Core.check.imageDesc({
diff --git a/packages/core/src/lib/check.ts b/packages/core/src/lib/check.ts
index df4b328..2627864 100644
--- a/packages/core/src/lib/check.ts
+++ b/packages/core/src/lib/check.ts
@@ -45,6 +45,22 @@ function rectDesc(
   return true;
 }
 
+function circleDesc(
+  desc: any
+): boolean {
+  const { color, borderColor, borderWidth } = desc;
+  if (desc.hasOwnProperty('color') && !is.color(color)) {
+    return false;
+  }
+  if (desc.hasOwnProperty('borderColor') && !is.color(borderColor)) {
+    return false;
+  }
+  if (desc.hasOwnProperty('borderWidth') && !is.number(borderWidth)) {
+    return false;
+  }
+  return true;
+}
+
 
 function imageDesc(
   desc: any
@@ -106,6 +122,7 @@ function textDesc(
 const check = {
   attrs,
   rectDesc,
+  circleDesc,
   imageDesc,
   svgDesc,
   textDesc,
@@ -114,6 +131,7 @@ const check = {
 type TypeCheck = {
   attrs: (value: any) => boolean,
   rectDesc: (value: any) => boolean,
+  circleDesc: (value: any) => boolean,
   imageDesc: (value: any) => boolean,
   svgDesc: (value: any) => boolean,
   textDesc: (value: any) => boolean,