diff --git a/src/utils/handlers/handlers.ts b/src/utils/handlers/handlers.ts
index c8b170d..7c08cd7 100644
--- a/src/utils/handlers/handlers.ts
+++ b/src/utils/handlers/handlers.ts
@@ -136,7 +136,7 @@ function bracketWithType(str: string, type?: string) {
       return base
         .replace(/(url\(.*?\))/g, v => v.replace(/_/g, '\\_'))
         .replace(/([^\\])_/g, '$1 ')
-        .replace(/calc\((.*)/g, (v) => {
+        .replace(/(?:calc|clamp|max|min)\((.*)/g, (v) => {
           return v.replace(/(-?\d*\.?\d(?!\b-.+[,)](?![^+\-/*])\D)(?:%|[a-z]+)?|\))([+\-/*])/g, '$1 $2 ')
         })
     }
diff --git a/test/handler.test.ts b/test/handler.test.ts
new file mode 100644
index 0000000..85f786b
--- /dev/null
+++ b/test/handler.test.ts
@@ -0,0 +1,15 @@
+import { describe, expect, it } from 'vitest'
+import { handler as h } from '../src/utils'
+
+describe('value handler', () => {
+  it('bracket math function', () => {
+    expect(h.bracket('[calc(1-2)]')).eql('calc(1 - 2)')
+    expect(h.bracket('[min(1-2)]')).eql('min(1 - 2)')
+    expect(h.bracket('[max(1-2)]')).eql('max(1 - 2)')
+    expect(h.bracket('[clamp(1-2)]')).eql('clamp(1 - 2)')
+
+    expect(h.bracket('[calc(1+2)]')).eql('calc(1 + 2)')
+    expect(h.bracket('[calc(1/2)]')).eql('calc(1 / 2)')
+    expect(h.bracket('[calc(1*2)]')).eql('calc(1 * 2)')
+  })
+})