diff --git a/src/views/main/pests/components/CountChart.vue b/src/views/main/pests/components/CountChart.vue
index 887fd609..63737e78 100644
--- a/src/views/main/pests/components/CountChart.vue
+++ b/src/views/main/pests/components/CountChart.vue
@@ -223,6 +223,7 @@
 
       yAxis: {
         type: 'value',
+        minInterval: 1,
         axisLine: {
           show: false,
           lineStyle: {