diff --git a/packages/core/src/model/cartesian-charts.ts b/packages/core/src/model/cartesian-charts.ts
index e232ac0748..d3f4af328b 100644
--- a/packages/core/src/model/cartesian-charts.ts
+++ b/packages/core/src/model/cartesian-charts.ts
@@ -1,4 +1,3 @@
-import { format } from 'date-fns/format'
 import { cloneDeep, uniq } from 'lodash-es'
 import { getProperty } from '@/tools'
 import { ChartModel } from './model'