diff --git a/README.md b/README.md
index 956d3b3..3304569 100644
--- a/README.md
+++ b/README.md
@@ -172,7 +172,20 @@ npm install -g @acehubert/testlink-mcp
 testlink --version
 ```
 
-推荐使用环境变量配置连接信息，避免 API Key 进入 shell 历史：
+推荐使用本地配置或环境变量配置连接信息，避免 API Key 进入普通业务命令的 shell 历史：
+
+```bash
+testlink config set url "https://your-testlink-server.com/testlink"
+testlink config set apiKey "your_api_key"
+testlink config get
+testlink config get url
+testlink config remove apiKey
+```
+
+解析优先级为：命令行参数 > 本地配置 > 环境变量。
+MCP Server 和 CLI 共用同一份本地配置，因此 `config set` 后无需再为 MCP 单独配置同样的值。
+
+也可以使用环境变量配置连接信息：
 
 ```bash
 export TESTLINK_URL="https://your-testlink-server.com/testlink"
diff --git a/src/cli.ts b/src/cli.ts
index 23c92ed..595e5e2 100644
--- a/src/cli.ts
+++ b/src/cli.ts
@@ -8,15 +8,21 @@ import dotenv from "dotenv";
 import yargs, { type Argv, type ArgumentsCamelCase } from "yargs";
 import { hideBin } from "yargs/helpers";
 import { TestLinkAPI, type TestLinkRecord } from "./api.js";
+import {
+  configKeys,
+  inspectTestLinkConfig,
+  removeSavedTestLinkConfig,
+  resolveTestLinkConfig,
+  updateSavedTestLinkConfig,
+  type TestLinkConfigKey,
+  type TestLinkConnectionOptions,
+} from "./config.js";
 
 dotenv.config({ quiet: true });
 
 type CommandArgs = ArgumentsCamelCase<Record<string, unknown>>;
 
-interface TestLinkCliOptions {
-  url?: string;
-  apiKey?: string;
-}
+type TestLinkCliOptions = TestLinkConnectionOptions;
 
 function getString(args: CommandArgs, key: string): string | undefined {
   const value = args[key];
@@ -27,12 +33,12 @@ function addConnectionOptions(parser: Argv): Argv {
   return parser
     .option("url", {
       type: "string",
-      describe: "TestLink 服务地址；未传入时读取 TESTLINK_URL",
+      describe: "服务地址；",
     })
     .option("apiKey", {
       type: "string",
       alias: "api-key",
-      describe: "TestLink API Key；未传入时读取 TESTLINK_API_KEY",
+      describe: "API Key；",
     });
 }
 
@@ -46,22 +52,7 @@ export function getTestLinkCliOptions(args: CommandArgs): TestLinkCliOptions {
 export function resolveTestLinkCliOptions(
   options: TestLinkCliOptions,
 ): Required<TestLinkCliOptions> {
-  const resolvedOptions = {
-    url: options.url ?? process.env.TESTLINK_URL,
-    apiKey: options.apiKey ?? process.env.TESTLINK_API_KEY,
-  };
-
-  if (!resolvedOptions.url || !resolvedOptions.apiKey) {
-    throw new Error(
-      [
-        "请通过命令行参数或环境变量提供 TestLink 连接配置:",
-        "--url / TESTLINK_URL - TestLink 服务地址",
-        "--apiKey / TESTLINK_API_KEY - TestLink API Key",
-      ].join("\n"),
-    );
-  }
-
-  return resolvedOptions as Required<TestLinkCliOptions>;
+  return resolveTestLinkConfig(options);
 }
 
 function getRequiredString(args: CommandArgs, key: string): string {
@@ -92,11 +83,82 @@ function printJsonResult(result: unknown): void {
   console.log(JSON.stringify(result, null, 2));
 }
 
+function printConfigValue(key: TestLinkConfigKey, value: string | undefined): void {
+  console.log(`${key}: ${value ?? "null"}`);
+}
+
+function printConfigValues(config: TestLinkCliOptions): void {
+  printConfigValue("url", config.url);
+  printConfigValue("apiKey", config.apiKey);
+}
+
 function getClient(args: CommandArgs): TestLinkAPI {
   const options = resolveTestLinkCliOptions(getTestLinkCliOptions(args));
   return new TestLinkAPI(options.url, options.apiKey);
 }
 
+function normalizeConfigKey(key: string): TestLinkConfigKey {
+  if (key === "url") return "url";
+  if (key === "apiKey" || key === "api-key") return "apiKey";
+  throw new Error(`不支持的配置项: ${key}，可用配置项: url, apiKey`);
+}
+
+function registerConfigCommands(parser: Argv): Argv {
+  return parser.command(
+    "config <action> [key] [value]",
+    "连接配置操作：get / set / remove",
+    (command) =>
+      command
+        .positional("action", {
+          choices: ["get", "set", "remove"] as const,
+          describe: "操作类型",
+        })
+        .positional("key", {
+          type: "string",
+          choices: configKeys,
+          describe: "配置项：url / apiKey",
+        })
+        .positional("value", {
+          type: "string",
+          describe: "配置值",
+        }),
+    async (args: CommandArgs) => {
+      const action = getRequiredString(args, "action");
+
+      switch (action) {
+        case "get": {
+          const inspection = inspectTestLinkConfig(getTestLinkCliOptions(args));
+          const rawKey = getString(args, "key");
+
+          if (rawKey) {
+            const key = normalizeConfigKey(rawKey);
+            printConfigValue(key, inspection.values[key]);
+            return;
+          }
+
+          printConfigValues(inspection.values);
+          return;
+        }
+        case "set": {
+          const key = normalizeConfigKey(getRequiredString(args, "key"));
+          const value = getRequiredString(args, "value");
+          updateSavedTestLinkConfig(key, value);
+          printConfigValue(key, value);
+          return;
+        }
+        case "remove": {
+          const key = normalizeConfigKey(getRequiredString(args, "key"));
+          removeSavedTestLinkConfig(key);
+          console.log(`${key} removed`);
+          return;
+        }
+        default:
+          throw new Error(`未知操作类型: ${action}`);
+      }
+    },
+  );
+}
+
 function registerProjectCommands(parser: Argv): Argv {
   return parser.command(
     "projects <action>",
@@ -369,6 +431,7 @@ function registerRequirementCommands(parser: Argv): Argv {
 
 async function runCli(): Promise<void> {
   let parser = addConnectionOptions(yargs(hideBin(process.argv)).scriptName("testlink"));
+  parser = registerConfigCommands(parser);
   parser = registerProjectCommands(parser);
   parser = registerCaseCommands(parser);
   parser = registerSuiteCommands(parser);
diff --git a/src/config.ts b/src/config.ts
new file mode 100644
index 0000000..94223de
--- /dev/null
+++ b/src/config.ts
@@ -0,0 +1,145 @@
+import fs from "node:fs";
+import os from "node:os";
+import path from "node:path";
+
+export interface TestLinkConnectionOptions {
+  url?: string;
+  apiKey?: string;
+}
+
+export type TestLinkConfigKey = keyof TestLinkConnectionOptions;
+export type TestLinkConfigSource = "argument" | "config" | "env" | "unset";
+
+export interface TestLinkConfigInspection {
+  configFile: string;
+  values: TestLinkConnectionOptions;
+  sources: Record<TestLinkConfigKey, TestLinkConfigSource>;
+}
+
+export const configKeys = ["url", "apiKey"] as const;
+
+export function getTestLinkConfigFilePath(): string {
+  if (process.env.TESTLINK_CONFIG_FILE) {
+    return process.env.TESTLINK_CONFIG_FILE;
+  }
+
+  const configHome = process.env.XDG_CONFIG_HOME || path.join(os.homedir(), ".config");
+  return path.join(configHome, "testlink", "config.json");
+}
+
+function toConfigValue(value: unknown): string | undefined {
+  if (typeof value !== "string") return undefined;
+  const trimmedValue = value.trim();
+  return trimmedValue.length > 0 ? trimmedValue : undefined;
+}
+
+export function readSavedTestLinkConfig(): TestLinkConnectionOptions {
+  const configFile = getTestLinkConfigFilePath();
+  if (!fs.existsSync(configFile)) {
+    return {};
+  }
+
+  const parsed = JSON.parse(fs.readFileSync(configFile, "utf8")) as unknown;
+  if (typeof parsed !== "object" || parsed === null || Array.isArray(parsed)) {
+    throw new Error(`配置文件格式错误: ${configFile}`);
+  }
+
+  const rawConfig = parsed as Record<string, unknown>;
+  return {
+    url: toConfigValue(rawConfig.url),
+    apiKey: toConfigValue(rawConfig.apiKey),
+  };
+}
+
+export function writeSavedTestLinkConfig(config: TestLinkConnectionOptions): void {
+  const configFile = getTestLinkConfigFilePath();
+  fs.mkdirSync(path.dirname(configFile), { recursive: true });
+  fs.writeFileSync(`${configFile}.tmp`, `${JSON.stringify(config, null, 2)}\n`, {
+    mode: 0o600,
+  });
+  fs.renameSync(`${configFile}.tmp`, configFile);
+  fs.chmodSync(configFile, 0o600);
+}
+
+function resolveConfigValue(
+  argumentValue: string | undefined,
+  savedValue: string | undefined,
+  envValue: string | undefined,
+): { value?: string; source: TestLinkConfigSource } {
+  if (argumentValue) return { value: argumentValue, source: "argument" };
+  if (savedValue) return { value: savedValue, source: "config" };
+  if (envValue) return { value: envValue, source: "env" };
+  return { source: "unset" };
+}
+
+export function inspectTestLinkConfig(
+  options: TestLinkConnectionOptions,
+): TestLinkConfigInspection {
+  const savedConfig = readSavedTestLinkConfig();
+  const url = resolveConfigValue(options.url, savedConfig.url, process.env.TESTLINK_URL);
+  const apiKey = resolveConfigValue(
+    options.apiKey,
+    savedConfig.apiKey,
+    process.env.TESTLINK_API_KEY,
+  );
+
+  return {
+    configFile: getTestLinkConfigFilePath(),
+    values: {
+      url: url.value,
+      apiKey: apiKey.value,
+    },
+    sources: {
+      url: url.source,
+      apiKey: apiKey.source,
+    },
+  };
+}
+
+export function resolveTestLinkConfig(
+  options: TestLinkConnectionOptions,
+): Required<TestLinkConnectionOptions> {
+  const inspection = inspectTestLinkConfig(options);
+
+  if (!inspection.values.url || !inspection.values.apiKey) {
+    throw new Error(
+      [
+        "请通过命令行参数、本地配置或环境变量提供 TestLink 连接配置:",
+        "--url / config url / TESTLINK_URL - TestLink 服务地址",
+        "--apiKey / config apiKey / TESTLINK_API_KEY - TestLink API Key",
+        `配置文件: ${inspection.configFile}`,
+      ].join("\n"),
+    );
+  }
+
+  return inspection.values as Required<TestLinkConnectionOptions>;
+}
+
+export function updateSavedTestLinkConfig(
+  key: TestLinkConfigKey,
+  value: string,
+): TestLinkConnectionOptions {
+  if (!configKeys.includes(key)) {
+    throw new Error(`不支持的配置项: ${key}`);
+  }
+
+  const nextConfig = {
+    ...readSavedTestLinkConfig(),
+    [key]: value,
+  };
+  writeSavedTestLinkConfig(nextConfig);
+  return nextConfig;
+}
+
+export function removeSavedTestLinkConfig(key: TestLinkConfigKey): TestLinkConnectionOptions {
+  if (!configKeys.includes(key)) {
+    throw new Error(`不支持的配置项: ${key}`);
+  }
+
+  const nextConfig = {
+    ...readSavedTestLinkConfig(),
+    [key]: undefined,
+  };
+  writeSavedTestLinkConfig(nextConfig);
+  return nextConfig;
+}
diff --git a/src/index.ts b/src/index.ts
index 7af76be..baa8505 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -15,6 +15,7 @@ import dotenv from "dotenv";
 import yargs from "yargs";
 import { hideBin } from "yargs/helpers";
 import { TestLinkAPI } from "./api.js";
+import { resolveTestLinkConfig, type TestLinkConnectionOptions } from "./config.js";
 
 export { TestLinkAPI } from "./api.js";
 export type { TestLinkApiOptions } from "./api.js";
@@ -23,10 +24,7 @@ dotenv.config({ quiet: true });
 
 type CommandArgs = Record<string, unknown>;
 
-interface TestLinkMcpOptions {
-  url?: string;
-  apiKey?: string;
-}
+type TestLinkMcpOptions = TestLinkConnectionOptions;
 
 function getString(args: CommandArgs, key: string): string | undefined {
   const value = args[key];
@@ -37,34 +35,19 @@ function addConnectionOptions(parser: ReturnType<typeof yargs>): ReturnType<type
   return parser
     .option("url", {
       type: "string",
-      describe: "TestLink 服务地址；未传入时读取 TESTLINK_URL",
+      describe: "服务地址；",
     })
     .option("apiKey", {
       type: "string",
       alias: "api-key",
-      describe: "TestLink API Key；未传入时读取 TESTLINK_API_KEY",
+      describe: "API Key；",
     });
 }
 
 export function resolveTestLinkMcpOptions(
   options: TestLinkMcpOptions,
 ): Required<TestLinkMcpOptions> {
-  const resolvedOptions = {
-    url: options.url ?? process.env.TESTLINK_URL,
-    apiKey: options.apiKey ?? process.env.TESTLINK_API_KEY,
-  };
-
-  if (!resolvedOptions.url || !resolvedOptions.apiKey) {
-    throw new Error(
-      [
-        "请通过启动参数或环境变量提供 TestLink 连接配置:",
-        "--url / TESTLINK_URL - TestLink 服务地址",
-        "--apiKey / TESTLINK_API_KEY - TestLink API Key",
-      ].join("\n"),
-    );
-  }
-
-  return resolvedOptions as Required<TestLinkMcpOptions>;
+  return resolveTestLinkConfig(options);
 }
 
 function parseMcpOptions(): TestLinkMcpOptions {