diff --git a/src/views/spectrumAnalysis/components/BetaGammaSpectrum.vue b/src/views/spectrumAnalysis/components/BetaGammaSpectrum.vue
index eef4c43..9c416de 100644
--- a/src/views/spectrumAnalysis/components/BetaGammaSpectrum.vue
+++ b/src/views/spectrumAnalysis/components/BetaGammaSpectrum.vue
@@ -429,11 +429,14 @@ export default {
         this.myChart = this.$refs.chartTwoDRef.getChartInstance()
         let graphicHeight = this.$refs.TwoChartRef.clientHeight
         graphic1.shape.height = graphicHeight
+        let minleft = this.myChart.convertToPixel({ xAxisId: '2' }, 0)
+        let maxRight = this.myChart.convertToPixel({ xAxisId: '2' }, 1024)
         graphic1.position = [
           this.myChart.convertToPixel({ xAxisId: '2' }, minX),
           this.myChart.convertToPixel({ yAxisId: '3' }, maxY),
         ]
         graphic1.ondrag = function () {
+          this.position[0] = this.position[0] < minleft ? minleft : this.position[0]
           let [a, lineSeries] = _this.twoDOption.series
           _this.startChannel = parseInt(_this.myChart.convertFromPixel({ xAxisId: '2' }, this.position[0]))
           const rect = [
@@ -451,12 +454,14 @@ export default {
           // }
           // _this.twoDOption.series.splice(1, _this.twoDOption.series.length - 1, ...lineSeries)
         }
+        // > maxRight ? maxRight : currRight
         graphic2.shape.height = graphicHeight
         graphic2.position = [
           this.myChart.convertToPixel({ xAxisId: '2' }, maxX),
           this.myChart.convertToPixel({ yAxisId: '3' }, maxY),
         ]
         graphic2.ondrag = function () {
+          this.position[0] = this.position[0] > maxRight ? maxRight : this.position[0]
           let [a, lineSeries] = _this.twoDOption.series
           _this.endChannel = parseInt(_this.myChart.convertFromPixel({ xAxisId: '2' }, this.position[0]))
           const rect = [
@@ -682,6 +687,8 @@ export default {
             color: '#99CA53',
           }
           // this.reDrawRect()
+        } else {
+          this.$emit('update:isLoading', false)
         }
       } catch (error) {
         console.error(error)