diff --git a/src/components/combining/index.jsx b/src/components/combining/index.jsx
index 3bc82993..01f34e75 100644
--- a/src/components/combining/index.jsx
+++ b/src/components/combining/index.jsx
@@ -432,8 +432,10 @@ const Combining = forwardRef((props, ref) => {
                 disabled={!!state.tableData.length}
                 onChange={({ target }) => {
                   setInfo({ channel: target.value })
-                  if (target.value !== "1") {
-                    setInfo({ receive_mode: 1 })
+                  if (target.value === "3") {
+                    this.handleChange(2, "receive_mode")
+                  } else {
+                    this.handleChange(1, "receive_mode")
                   }
                 }}
                 value={info.channel}
diff --git a/src/pages/exchangecode/combiningAdd/index.jsx b/src/pages/exchangecode/combiningAdd/index.jsx
index af9ba528..4614d3d2 100644
--- a/src/pages/exchangecode/combiningAdd/index.jsx
+++ b/src/pages/exchangecode/combiningAdd/index.jsx
@@ -1026,7 +1026,9 @@ export default class combiningAdd extends React.Component {
                     disabled={!!this.state.tempdata.length}
                     onChange={({ target }) => {
                       this.handleChange(target.value, "channel")
-                      if (target.value !== "1") {
+                      if (target.value === "3") {
+                        this.handleChange(2, "receive_mode")
+                      } else {
                         this.handleChange(1, "receive_mode")
                       }
                     }}