diff --git a/src/views/gateway/southdirection.vue b/src/views/gateway/southdirection.vue
index 48188bf..91240c3 100644
--- a/src/views/gateway/southdirection.vue
+++ b/src/views/gateway/southdirection.vue
@@ -382,10 +382,10 @@ const dataTypeArray = ref([
 	{ type: 'float32_BADC', datalen: 4, show: false },
 	{ type: 'float32_CDAB', datalen: 4, show: false },
 	{ type: 'float32_DCBA', datalen: 4, show: false },
-	{ type: 'float64_ABCD', datalen: 4, show: false },
-	{ type: 'float64_BADC', datalen: 4, show: false },
-	{ type: 'float64_CDAB', datalen: 4, show: false },
-	{ type: 'float64_DCBA', datalen: 4, show: false },
+	{ type: 'float64_ABCD', datalen: 8, show: false },
+	{ type: 'float64_BADC', datalen: 8, show: false },
+	{ type: 'float64_CDAB', datalen: 8, show: false },
+	{ type: 'float64_DCBA', datalen: 8, show: false },
 	{ type: 'int32', datalen: 4, show: false },
 	{ type: 'int32_ABCD', datalen: 4, show: false },
 	{ type: 'int32_BADC', datalen: 4, show: false },