diff --git a/client/src/pdd_ui.py b/client/src/pdd_ui.py
index 58f1b16..0b797b0 100644
--- a/client/src/pdd_ui.py
+++ b/client/src/pdd_ui.py
@@ -36,6 +36,7 @@ from PyQt5.QtWidgets import (
     QHeaderView,
     QHBoxLayout,
     QShortcut,
+    QSizePolicy,
     QVBoxLayout,
     QWidget,
 )
@@ -344,7 +345,9 @@ class PDDTaskPage(QWidget):
         self.keywordInput = SearchLineEdit(self)
         self.keywordInput.setPlaceholderText("任务编号、商品编号或商品标题")
         self.keywordInput.setClearButtonEnabled(True)
-        self.keywordInput.setFixedWidth(190)
+        self.keywordInput.setMinimumWidth(190)
+        self.keywordInput.setMaximumWidth(480)
+        self.keywordInput.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed)
         self.keywordInput.setAccessibleName("任务关键词")
 
         self.searchButton = PushButton(FIF.SEARCH, "搜索", self)
@@ -365,6 +368,7 @@ class PDDTaskPage(QWidget):
         commandLayout.addWidget(CaptionLabel("关键词", self.commandCard), 0, 5)
         commandLayout.addWidget(self.keywordInput, 0, 6)
         commandLayout.addWidget(self.searchButton, 0, 7)
+        commandLayout.setColumnStretch(6, 4)
         commandLayout.setColumnStretch(8, 1)
         commandLayout.addWidget(self.refreshButton, 0, 9)