diff --git a/app/src/main/java/com/casic/app/safetreecontroller/fragments/MethaneMonitorFragment.kt b/app/src/main/java/com/casic/app/safetreecontroller/fragments/MethaneMonitorFragment.kt
index 51ea481..80a3b67 100644
--- a/app/src/main/java/com/casic/app/safetreecontroller/fragments/MethaneMonitorFragment.kt
+++ b/app/src/main/java/com/casic/app/safetreecontroller/fragments/MethaneMonitorFragment.kt
@@ -162,6 +162,13 @@
                 //LEL百分比 = (X / 10000) / 0.05 × 100% = X / 500
                 val formatValue = "%.2f".format(ppm / 500f)
                 binding.currentGasValueView.text = "当前燃气浓度：${formatValue}% VOL"
+                if (ppm > binding.thresholdView.text.toString().toFloat() * 500) {
+                    binding.currentGasValueView.setTextColor(Color.RED)
+                    binding.currentGasValueView.typeface = Typeface.DEFAULT_BOLD
+                } else {
+                    binding.currentGasValueView.setTextColor(Color.BLACK)
+                    binding.currentGasValueView.typeface = Typeface.DEFAULT
+                }
 
                 //折线图添加数据
                 xAxisLabels.add(System.currentTimeMillis().timestampToTime())

diff --git a/app/src/main/java/com/casic/app/safetreecontroller/fragments/MethaneMonitorFragment.kt b/app/src/main/java/com/casic/app/safetreecontroller/fragments/MethaneMonitorFragment.kt
index 51ea481..80a3b67 100644
--- a/app/src/main/java/com/casic/app/safetreecontroller/fragments/MethaneMonitorFragment.kt
+++ b/app/src/main/java/com/casic/app/safetreecontroller/fragments/MethaneMonitorFragment.kt
@@ -162,6 +162,13 @@
                 //LEL百分比 = (X / 10000) / 0.05 × 100% = X / 500
                 val formatValue = "%.2f".format(ppm / 500f)
                 binding.currentGasValueView.text = "当前燃气浓度：${formatValue}% VOL"
+                if (ppm > binding.thresholdView.text.toString().toFloat() * 500) {
+                    binding.currentGasValueView.setTextColor(Color.RED)
+                    binding.currentGasValueView.typeface = Typeface.DEFAULT_BOLD
+                } else {
+                    binding.currentGasValueView.setTextColor(Color.BLACK)
+                    binding.currentGasValueView.typeface = Typeface.DEFAULT
+                }
 
                 //折线图添加数据
                 xAxisLabels.add(System.currentTimeMillis().timestampToTime())
diff --git a/app/src/main/java/com/casic/app/safetreecontroller/widgets/LineChartMarkerView.kt b/app/src/main/java/com/casic/app/safetreecontroller/widgets/LineChartMarkerView.kt
index 5736006..1601565 100644
--- a/app/src/main/java/com/casic/app/safetreecontroller/widgets/LineChartMarkerView.kt
+++ b/app/src/main/java/com/casic/app/safetreecontroller/widgets/LineChartMarkerView.kt
@@ -23,8 +23,8 @@
         try {
             timeView.text = xAxisDate[(e.x).toInt()]
             valueView.text = "${"%.2f".format(e.y)}% VOL"
-        } catch (e1: Exception) {
-            e1.printStackTrace()
+        } catch (ex: Exception) {
+            ex.printStackTrace()
         }
         super.refreshContent(e, highlight)
     }

diff --git a/app/src/main/java/com/casic/app/safetreecontroller/fragments/MethaneMonitorFragment.kt b/app/src/main/java/com/casic/app/safetreecontroller/fragments/MethaneMonitorFragment.kt
index 51ea481..80a3b67 100644
--- a/app/src/main/java/com/casic/app/safetreecontroller/fragments/MethaneMonitorFragment.kt
+++ b/app/src/main/java/com/casic/app/safetreecontroller/fragments/MethaneMonitorFragment.kt
@@ -162,6 +162,13 @@
                 //LEL百分比 = (X / 10000) / 0.05 × 100% = X / 500
                 val formatValue = "%.2f".format(ppm / 500f)
                 binding.currentGasValueView.text = "当前燃气浓度：${formatValue}% VOL"
+                if (ppm > binding.thresholdView.text.toString().toFloat() * 500) {
+                    binding.currentGasValueView.setTextColor(Color.RED)
+                    binding.currentGasValueView.typeface = Typeface.DEFAULT_BOLD
+                } else {
+                    binding.currentGasValueView.setTextColor(Color.BLACK)
+                    binding.currentGasValueView.typeface = Typeface.DEFAULT
+                }
 
                 //折线图添加数据
                 xAxisLabels.add(System.currentTimeMillis().timestampToTime())
diff --git a/app/src/main/java/com/casic/app/safetreecontroller/widgets/LineChartMarkerView.kt b/app/src/main/java/com/casic/app/safetreecontroller/widgets/LineChartMarkerView.kt
index 5736006..1601565 100644
--- a/app/src/main/java/com/casic/app/safetreecontroller/widgets/LineChartMarkerView.kt
+++ b/app/src/main/java/com/casic/app/safetreecontroller/widgets/LineChartMarkerView.kt
@@ -23,8 +23,8 @@
         try {
             timeView.text = xAxisDate[(e.x).toInt()]
             valueView.text = "${"%.2f".format(e.y)}% VOL"
-        } catch (e1: Exception) {
-            e1.printStackTrace()
+        } catch (ex: Exception) {
+            ex.printStackTrace()
         }
         super.refreshContent(e, highlight)
     }
diff --git a/app/src/main/res/layout/fragment_methane_monitor.xml b/app/src/main/res/layout/fragment_methane_monitor.xml
index 423446a..990497e 100644
--- a/app/src/main/res/layout/fragment_methane_monitor.xml
+++ b/app/src/main/res/layout/fragment_methane_monitor.xml
@@ -76,7 +76,7 @@
                 android:maxLength="4"
                 android:padding="@dimen/dp_5"
                 android:singleLine="true"
-                android:textColor="@color/red"
+                android:textColor="@color/black"
                 android:textSize="@dimen/sp_16" />
 
             <TextView