diff --git a/crates/ide-core/src/workflow_settings.rs b/crates/ide-core/src/workflow_settings.rs
index 56b6a80a..64fb58fb 100644
--- a/crates/ide-core/src/workflow_settings.rs
+++ b/crates/ide-core/src/workflow_settings.rs
@@ -221,6 +221,8 @@ pub struct DebuggerSettings {
     /// Data Views: list variables by name instead of the adapter's order.
     pub sort_values: bool,
     pub value_tooltip: bool,
+    /// While suspended, selecting an expression shows its value.
+    pub value_tooltip_on_selection: bool,
     pub value_tooltip_delay: u32,
     /// Stepping: do not step into library code (debugpy `justMyCode`, js-debug `skipFiles`).
     pub skip_library_code: bool,
@@ -238,6 +240,7 @@ impl Default for DebuggerSettings {
             inline_values: true,
             sort_values: false,
             value_tooltip: true,
+            value_tooltip_on_selection: true,
             value_tooltip_delay: 700,
             skip_library_code: true,
             python: PythonDebuggerSettings::default(),
diff --git a/src/bindings.ts b/src/bindings.ts
index 73996c71..6c9ddf95 100644
--- a/src/bindings.ts
+++ b/src/bindings.ts
@@ -2244,6 +2244,8 @@ export type DebuggerSettings = {
 	/**  Data Views: list variables by name instead of the adapter's order. */
 	sortValues?: boolean,
 	valueTooltip?: boolean,
+	/**  While suspended, selecting an expression shows its value. */
+	valueTooltipOnSelection?: boolean,
 	valueTooltipDelay?: number,
 	/**  Stepping: do not step into library code (debugpy `justMyCode`, js-debug `skipFiles`). */
 	skipLibraryCode?: boolean,
diff --git a/src/features/debugger/__tests__/values.test.ts b/src/features/debugger/__tests__/values.test.ts
index a22584c5..38a5bcfc 100644
--- a/src/features/debugger/__tests__/values.test.ts
+++ b/src/features/debugger/__tests__/values.test.ts
@@ -1,4 +1,6 @@
 import { describe, expect, it } from "vitest";
+import { EditorSelection, EditorState } from "@codemirror/state";
+import { selectionExpression } from "../editor/valueTooltip";
 import { classifyValue, identifiersIn, inlineValue, sortVariables } from "../values";
 import { inlineValuesFor } from "../editor/execution";
 import { frameLabel, groupFrames, isLibraryFrame } from "../frames";
@@ -109,3 +111,22 @@ describe("sortVariables", () => {
     expect(names(sortVariables(items))).toEqual(["[0]", "[1]", "[10]", "[2]"]);
   });
 });
+
+describe("selectionExpression", () => {
+  const at = (doc: string, from: number, to: number) =>
+    selectionExpression(EditorState.create({ doc, selection: EditorSelection.single(from, to) }));
+  it("takes a one-line selection", () => {
+    expect(at("total += item.price", 9, 19)).toEqual({ from: 9, text: "item.price" });
+  });
+  it("ignores empty, blank, multi-line and multiple selections", () => {
+    expect(at("a + b", 2, 2)).toBeNull();
+    expect(at("a   b", 1, 4)).toBeNull();
+    expect(at("a\nb", 0, 3)).toBeNull();
+    const multi = EditorState.create({
+      doc: "a + b",
+      selection: EditorSelection.create([EditorSelection.range(0, 1), EditorSelection.range(4, 5)]),
+      extensions: EditorState.allowMultipleSelections.of(true),
+    });
+    expect(selectionExpression(multi)).toBeNull();
+  });
+});
diff --git a/src/features/debugger/editor/valueTooltip.ts b/src/features/debugger/editor/valueTooltip.ts
index 6c528443..32d12d51 100644
--- a/src/features/debugger/editor/valueTooltip.ts
+++ b/src/features/debugger/editor/valueTooltip.ts
@@ -3,9 +3,10 @@
  * while suspended, hovering an expression (or the selection under the mouse)
  * evaluates it in the selected frame.
  */
-import type { Extension } from "@codemirror/state";
+import type { EditorState, Extension } from "@codemirror/state";
 import type { DebugSessionId, Variable } from "@/bindings";
-import { hoverTooltip, type EditorView } from "@codemirror/view";
+import { hoverTooltip, ViewPlugin, type EditorView, type ViewUpdate } from "@codemirror/view";
+import { showHint } from "@/editor/lsp/hint";
 import { workflowSettings } from "@/platform/workflowSettings";
 import { navigationModifierHeld } from "@/platform/navigationModifier";
 import { activeSession, evaluate } from "../state";
@@ -109,3 +110,59 @@ export function valueTooltip(): Extension {
     { hoverTime: BASE_HOVER },
   );
 }
+
+const SELECTION_DELAY = 400;
+const MAX_SELECTION = 200;
+
+/** The selected text when it can be evaluated: one non-blank line, not too long. */
+export function selectionExpression(state: EditorState): { from: number; text: string } | null {
+  const sel = state.selection;
+  if (sel.ranges.length !== 1 || sel.main.empty) return null;
+  const text = state.sliceDoc(sel.main.from, sel.main.to).trim();
+  if (!text || text.length > MAX_SELECTION || text.includes("\n")) return null;
+  return { from: sel.main.from, text };
+}
+
+/**
+ * Settings › Debugger › Data Views › "Show value tooltip on code selection": while
+ * suspended, selecting an expression shows its value once the selection settles.
+ */
+export function selectionValueTooltip(): Extension {
+  return ViewPlugin.fromClass(
+    class {
+      private timer: ReturnType<typeof setTimeout> | undefined;
+      private seq = 0;
+      constructor(readonly view: EditorView) {}
+
+      update(u: ViewUpdate) {
+        if (!u.selectionSet) return;
+        clearTimeout(this.timer);
+        this.seq++;
+        if (!u.transactions.some((tr) => tr.isUserEvent("select"))) return;
+        const seq = this.seq;
+        this.timer = setTimeout(() => void this.show(seq), SELECTION_DELAY);
+      }
+
+      private async show(seq: number) {
+        if (!workflowSettings().debugger.valueTooltipOnSelection) return;
+        const session = activeSession();
+        if (!session || session.status !== "paused") return;
+        const expr = selectionExpression(this.view.state);
+        if (!expr) return;
+        let value;
+        try {
+          value = await evaluate(expr.text, "hover", session);
+        } catch {
+          return;
+        }
+        // The selection moved on while evaluating.
+        if (seq !== this.seq) return;
+        showHint(this.view, () => valueHint(expr.text, value, session.id), { pos: expr.from, timeout: 60_000 });
+      }
+
+      destroy() {
+        clearTimeout(this.timer);
+      }
+    },
+  );
+}
diff --git a/src/features/debugger/index.ts b/src/features/debugger/index.ts
index edc93a7b..18ade51d 100644
--- a/src/features/debugger/index.ts
+++ b/src/features/debugger/index.ts
@@ -6,7 +6,7 @@
 import { lazyComponent } from "@/ui";
 import { onIdeEvent } from "@/platform/ipc";
 import { useProject } from "@/platform/project";
-import { valueTooltip } from "./editor/valueTooltip";
+import { selectionValueTooltip, valueTooltip } from "./editor/valueTooltip";
 import { registerEditorContribution } from "@/editor/api";
 import {
   registerMenuGroup,
@@ -65,6 +65,7 @@ export function activate(): () => void {
         executionPoint(ctx),
         runToCursorInlay(ctx),
         valueTooltip(),
+        selectionValueTooltip(),
         smartStepTargets(ctx),
       ],
     }),
diff --git a/src/features/settings/pages/execution.tsx b/src/features/settings/pages/execution.tsx
index fdf638a2..60c2a06c 100644
--- a/src/features/settings/pages/execution.tsx
+++ b/src/features/settings/pages/execution.tsx
@@ -180,6 +180,7 @@ export const EXECUTION_PAGES: PageSpec[] = [
             label: "Show value tooltip on mouse hover",
             hint: "Hovering a variable while suspended evaluates it in the selected frame.",
           },
+          { kind: "toggle", key: "debugger.valueTooltipOnSelection", label: "Show value tooltip on code selection" },
           { kind: "custom", label: "Value tooltip delay (ms)", component: TooltipDelayRow },
         ],
       },
diff --git a/src/platform/locales/text/zh.json b/src/platform/locales/text/zh.json
index 3b66e13b..4227b63b 100644
--- a/src/platform/locales/text/zh.json
+++ b/src/platform/locales/text/zh.json
@@ -1903,6 +1903,7 @@
   "Show the selected coverage suite in editors and the project view": "在编辑器和项目视图中显示所选覆盖率套件",
   "Show tool window bars": "显示工具窗口栏",
   "Show tool window names": "显示工具窗口名称",
+  "Show value tooltip on code selection": "选中代码时显示值提示",
   "Show value tooltip on mouse hover": "鼠标悬停时显示值工具提示",
   "Show values inline": "内联显示值",
   "Show virtual space at file bottom": "在文件底部显示虚拟空间",
diff --git a/src/platform/workflowSettings.ts b/src/platform/workflowSettings.ts
index 83fe6ee0..42871480 100644
--- a/src/platform/workflowSettings.ts
+++ b/src/platform/workflowSettings.ts
@@ -85,6 +85,7 @@ export interface DebuggerSettingsValid {
   inlineValues: boolean;
   sortValues: boolean;
   valueTooltip: boolean;
+  valueTooltipOnSelection: boolean;
   valueTooltipDelay: number;
   skipLibraryCode: boolean;
   python: { attachSubprocess: boolean; gevent: boolean };
@@ -245,6 +246,7 @@ export const DEFAULT_WORKFLOW: WorkflowSettings = {
     inlineValues: true,
     sortValues: false,
     valueTooltip: true,
+    valueTooltipOnSelection: true,
     valueTooltipDelay: 700,
     skipLibraryCode: true,
     python: { attachSubprocess: true, gevent: false },
@@ -380,6 +382,7 @@ export function validateDebugger(raw: unknown): DebuggerSettingsValid {
     inlineValues: bool(v.inlineValues, d.inlineValues),
     sortValues: bool(v.sortValues, d.sortValues),
     valueTooltip: bool(v.valueTooltip, d.valueTooltip),
+    valueTooltipOnSelection: bool(v.valueTooltipOnSelection, d.valueTooltipOnSelection),
     valueTooltipDelay: num(v.valueTooltipDelay, d.valueTooltipDelay, WORKFLOW_LIMITS.tooltipDelay, true),
     skipLibraryCode: bool(v.skipLibraryCode, d.skipLibraryCode),
     python: {