diff --git a/packages/flutter/lib/src/material/dropdown.dart b/packages/flutter/lib/src/material/dropdown.dart
index 28c93becb04..611802afc85 100644
--- a/packages/flutter/lib/src/material/dropdown.dart
+++ b/packages/flutter/lib/src/material/dropdown.dart
@@ -23,6 +23,7 @@ import 'colors.dart';
 import 'constants.dart';
 import 'debug.dart';
 import 'icons.dart';
+import 'ink_decoration.dart';
 import 'ink_well.dart';
 import 'input_decorator.dart';
 import 'material.dart';
@@ -217,14 +218,22 @@ class _DropdownMenuItemButtonState<T> extends State<_DropdownMenuItemButton<T>>
       child = Padding(padding: padding, child: child);
     }
     child = SizedBox(height: widget.route.itemHeight, child: child);
+
+    final bool isSelected = widget.itemIndex == widget.route.selectedIndex;
+    final FocusHighlightMode highlightMode = FocusManager.instance.highlightMode;
     // An [InkWell] is added to the item only if it is enabled
     if (dropdownMenuItem.enabled) {
       child = InkWell(
-        autofocus: widget.itemIndex == widget.route.selectedIndex,
+        autofocus: isSelected,
         enableFeedback: widget.enableFeedback,
         onTap: _handleOnTap,
         onFocusChange: _handleFocusChange,
-        child: child,
+        // When highlightMode is traditional, the InkWell draws the selected item background color.
+        // When highlightMode is touch, insert an Ink to force the selected item background color.
+        child:
+            highlightMode == FocusHighlightMode.touch
+                ? Ink(color: isSelected ? Theme.of(context).focusColor : null, child: child)
+                : child,
       );
     }
     child = FadeTransition(opacity: _opacityAnimation, child: child);
diff --git a/packages/flutter/test/material/dropdown_test.dart b/packages/flutter/test/material/dropdown_test.dart
index bf4545878f3..88bc2693815 100644
--- a/packages/flutter/test/material/dropdown_test.dart
+++ b/packages/flutter/test/material/dropdown_test.dart
@@ -4449,4 +4449,67 @@ void main() {
     // The dropdown should still be open, i.e., there should be one widget with 'second' text.
     expect(find.text('second'), findsOneWidget);
   });
+
+  // This is a regression test for https://github.com/flutter/flutter/issues/70294.
+  testWidgets(
+    'The previous selected item should be highlighted when reopening dropdown on mobile',
+    (WidgetTester tester) async {
+      final Color selectedColor = Colors.black.withValues(alpha: 0.12);
+      String currentValue = 'one';
+      await tester.pumpWidget(
+        MaterialApp(
+          theme: ThemeData(focusColor: selectedColor),
+          home: Scaffold(
+            body: Center(
+              child: StatefulBuilder(
+                builder: (BuildContext context, StateSetter setState) {
+                  return DropdownButton<String>(
+                    value: currentValue,
+                    items:
+                        menuItems
+                            .map(
+                              (String item) =>
+                                  DropdownMenuItem<String>(value: item, child: Text(item)),
+                            )
+                            .toList(),
+                    onChanged: (String? newValue) {
+                      setState(() {
+                        currentValue = newValue!;
+                      });
+                    },
+                  );
+                },
+              ),
+            ),
+          ),
+        ),
+      );
+
+      // Make sure the current value of dropdown is the first one of items list menuItems.
+      expect(find.text('one'), findsOne);
+
+      // Tap to open the dropdown.
+      await tester.tap(find.text('one'));
+      await tester.pumpAndSettle();
+
+      // Select the second item from the dropdown list.
+      await tester.tap(find.text('two'));
+      await tester.pumpAndSettle();
+
+      // Make sure the current item of dropdown is the second item of items list menuItems.
+      expect(find.text('two'), findsOneWidget);
+
+      // Tap to reopen the dropdown.
+      await tester.tap(find.text('two'));
+      await tester.pumpAndSettle();
+
+      // Make sure the current selected item is highlighted with selectedColor.
+      final Ink selectedItemInk = tester.widget<Ink>(
+        find.ancestor(of: find.text('two'), matching: find.byType(Ink)).first,
+      );
+      final BoxDecoration decoration = selectedItemInk.decoration! as BoxDecoration;
+      expect(decoration.color, selectedColor);
+    },
+    variant: TargetPlatformVariant.mobile(),
+  );
 }