diff --git a/src/utils/math.js b/src/utils/math.js
deleted file mode 100644
index ea9d6ef..0000000
--- a/src/utils/math.js
+++ /dev/null
@@ -1,23 +0,0 @@
-const $math = require('mathjs')
-export const math = {
-  add () {
-    return comp('add', arguments)
-  },
-  subtract () {
-    return comp('subtract', arguments)
-  },
-  multiply () {
-    return comp('multiply', arguments)
-  },
-  divide () {
-    return comp('divide', arguments)
-  }
-}
-function comp (_func, args) {
-  let t = $math.chain($math.bignumber(args[0]))
-  for (let i = 1; i < args.length; i++) {
-    t = t[_func]($math.bignumber(args[i]))
-  }
-  // 防止超过6位使用科学计数法
-  return parseFloat(t.done())
-}