diff --git a/package.json b/package.json
index 822fe441..dfd17b6a 100644
--- a/package.json
+++ b/package.json
@@ -129,6 +129,11 @@
             {
                 "title": "LeetCode",
                 "properties": {
+                    "leetcode.showLocked": {
+                        "type": "boolean",
+                        "default": false,
+                        "description": "Show locked problems."
+                    },
                     "leetcode.defaultLanguage": {
                         "type": "string",
                         "enum": [
diff --git a/resources/lock.png b/resources/lock.png
new file mode 100644
index 00000000..96780dad
Binary files /dev/null and b/resources/lock.png differ
diff --git a/src/commands/list.ts b/src/commands/list.ts
index 5fcd3d53..600335d0 100644
--- a/src/commands/list.ts
+++ b/src/commands/list.ts
@@ -7,6 +7,8 @@ import { executeCommand } from "../utils/cpUtils";
 import { DialogType, promptForOpenOutputChannel } from "../utils/uiUtils";
 
 export interface IProblem {
+    favorite: boolean;
+    locked: boolean;
     state: ProblemState;
     id: string;
     name: string;
@@ -19,19 +21,23 @@ export async function listProblems(channel: vscode.OutputChannel): Promise<IProb
         if (leetCodeManager.getStatus() === UserStatus.SignedOut) {
             return [];
         }
-        const result: string = await executeCommand(channel, "node", [leetCodeBinaryPath, "list", "-q", "L"]);
+        const leetCodeConfig: vscode.WorkspaceConfiguration = vscode.workspace.getConfiguration("leetcode");
+        const showLocked: boolean | undefined = leetCodeConfig.get<boolean>("showLocked");
+        const result: string = await executeCommand(channel, "node", showLocked ? [leetCodeBinaryPath, "list"] : [leetCodeBinaryPath, "list", "-q", "L"]);
         const problems: IProblem[] = [];
         const lines: string[] = result.split("\n");
-        const reg: RegExp = /(.?)\s*\[\s*(\d*)\]\s*(.*)\s*(Easy|Medium|Hard)\s*\((\s*\d+\.\d+ %)\)/;
+        const reg: RegExp = /^(.)\s(.{1,2})\s(.)\s\[\s*(\d*)\]\s*(.*)\s*(Easy|Medium|Hard)\s*\((\s*\d+\.\d+ %)\)/;
         for (const line of lines) {
             const match: RegExpMatchArray | null = line.match(reg);
-            if (match && match.length === 6) {
+            if (match && match.length === 8) {
                 problems.push({
-                    state: parseProblemState(match[1]),
-                    id: match[2].trim(),
-                    name: match[3].trim(),
-                    difficulty: match[4].trim(),
-                    passRate: match[5].trim(),
+                    favorite: match[1].trim().length > 0,
+                    locked: match[2].trim().length > 0,
+                    state: parseProblemState(match[3]),
+                    id: match[4].trim(),
+                    name: match[5].trim(),
+                    difficulty: match[6].trim(),
+                    passRate: match[7].trim(),
                 });
             }
         }
diff --git a/src/commands/show.ts b/src/commands/show.ts
index b8ce98b5..081a6bd2 100644
--- a/src/commands/show.ts
+++ b/src/commands/show.ts
@@ -81,7 +81,7 @@ async function parseProblemsToPicks(p: Promise<list.IProblem[]>): Promise<Array<
         const picks: Array<IQuickItemEx<string>> = (await p).map((problem: list.IProblem) => Object.assign({}, {
             label: `${parseProblemDecorator(problem.state)}${problem.id}.${problem.name}`,
             description: "",
-            detail: `AC rate: ${problem.passRate}, Difficulty: ${problem.difficulty}`,
+            detail: `${parseLockDecorator(problem.locked)}AC rate: ${problem.passRate}, Difficulty: ${problem.difficulty}`,
             value: problem.id,
         }));
         resolve(picks);
@@ -98,3 +98,7 @@ function parseProblemDecorator(state: ProblemState): string {
             return "";
     }
 }
+
+function parseLockDecorator(locked: boolean): string {
+    return locked ? "$(lock) " : "";
+}
diff --git a/src/leetCodeExplorer.ts b/src/leetCodeExplorer.ts
index 9f26bbeb..09dc7cff 100644
--- a/src/leetCodeExplorer.ts
+++ b/src/leetCodeExplorer.ts
@@ -10,6 +10,9 @@ import { ProblemState } from "./shared";
 export class LeetCodeNode {
     constructor(private data: list.IProblem, private isProblemNode = true) { }
 
+    public get locked(): boolean {
+        return this.data.locked;
+    }
     public get name(): string {
         return this.data.name;
     }
@@ -74,6 +77,8 @@ export class LeetCodeTreeDataProvider implements vscode.TreeDataProvider<LeetCod
             return [
                 new LeetCodeNode(
                     {
+                        favorite: false,
+                        locked: false,
                         state: ProblemState.Unknown,
                         id: "notSignIn",
                         name: "Sign in to LeetCode",
@@ -125,6 +130,8 @@ export class LeetCodeTreeDataProvider implements vscode.TreeDataProvider<LeetCod
             difficultynodes.push(
                 new LeetCodeNode(
                     {
+                        favorite: false,
+                        locked: false,
                         state: ProblemState.Unknown,
                         id: difficulty,
                         name: difficulty,
@@ -163,6 +170,9 @@ export class LeetCodeTreeDataProvider implements vscode.TreeDataProvider<LeetCod
             case ProblemState.NotAC:
                 return this.context.asAbsolutePath(path.join("resources", "x.png"));
             case ProblemState.Unknown:
+                if (element.locked) {
+                    return this.context.asAbsolutePath(path.join("resources", "lock.png"));
+                }
                 return this.context.asAbsolutePath(path.join("resources", "blank.png"));
             default:
                 return "";