diff --git a/config/base-iflow.settings.json b/config/base-iflow.settings.json
new file mode 100644
index 00000000..2fc56b47
--- /dev/null
+++ b/config/base-iflow.settings.json
@@ -0,0 +1,10 @@
+{
+  "env": {
+    "ANTHROPIC_BASE_URL": "http://127.0.0.1:8317/api/provider/iflow",
+    "ANTHROPIC_AUTH_TOKEN": "ccs-internal-managed",
+    "ANTHROPIC_MODEL": "deepseek-v3.2",
+    "ANTHROPIC_DEFAULT_OPUS_MODEL": "kimi-k2-thinking",
+    "ANTHROPIC_DEFAULT_SONNET_MODEL": "deepseek-v3.2",
+    "ANTHROPIC_DEFAULT_HAIKU_MODEL": "minimax-m2"
+  }
+}
diff --git a/config/base-qwen.settings.json b/config/base-qwen.settings.json
index 03b3e36c..03c510ca 100644
--- a/config/base-qwen.settings.json
+++ b/config/base-qwen.settings.json
@@ -2,9 +2,9 @@
   "env": {
     "ANTHROPIC_BASE_URL": "http://127.0.0.1:8317/api/provider/qwen",
     "ANTHROPIC_AUTH_TOKEN": "ccs-internal-managed",
-    "ANTHROPIC_MODEL": "qwen3-coder",
-    "ANTHROPIC_DEFAULT_OPUS_MODEL": "qwen3-coder",
-    "ANTHROPIC_DEFAULT_SONNET_MODEL": "qwen3-coder",
-    "ANTHROPIC_DEFAULT_HAIKU_MODEL": "qwen3-coder"
+    "ANTHROPIC_MODEL": "qwen3-coder-plus",
+    "ANTHROPIC_DEFAULT_OPUS_MODEL": "qwen3-coder-plus",
+    "ANTHROPIC_DEFAULT_SONNET_MODEL": "qwen3-coder-plus",
+    "ANTHROPIC_DEFAULT_HAIKU_MODEL": "qwen3-vl-plus"
   }
 }
diff --git a/src/cliproxy/auth-handler.ts b/src/cliproxy/auth-handler.ts
index 4a192c33..311ad428 100644
--- a/src/cliproxy/auth-handler.ts
+++ b/src/cliproxy/auth-handler.ts
@@ -12,12 +12,12 @@
  * Each provider has its own directory to avoid conflicts.
  */
 
+import { execSync, spawn } from 'child_process';
 import * as fs from 'fs';
 import * as path from 'path';
-import { spawn, execSync } from 'child_process';
 import { ProgressIndicator } from '../utils/progress-indicator';
-import { getProviderAuthDir, generateConfig } from './config-generator';
 import { ensureCLIProxyBinary } from './binary-manager';
+import { generateConfig, getProviderAuthDir } from './config-generator';
 import { CLIProxyProvider } from './types';
 
 /**
@@ -169,6 +169,13 @@ const OAUTH_CONFIGS: Record<CLIProxyProvider, ProviderOAuthConfig> = {
     scopes: ['openid', 'profile', 'email', 'model.completion'],
     authFlag: '--qwen-login',
   },
+  iflow: {
+    provider: 'iflow',
+    displayName: 'iFlow',
+    authUrl: 'https://iflow.cn/oauth',
+    scopes: ['phone', 'profile', 'email'],
+    authFlag: '--iflow-login',
+  },
 };
 
 /**
@@ -199,6 +206,7 @@ const PROVIDER_AUTH_PREFIXES: Record<CLIProxyProvider, string[]> = {
   codex: ['codex-', 'openai-'],
   agy: ['antigravity-', 'agy-'],
   qwen: ['qwen-'],
+  iflow: ['iflow-'],
 };
 
 /**
@@ -210,6 +218,7 @@ const PROVIDER_TYPE_VALUES: Record<CLIProxyProvider, string[]> = {
   codex: ['codex'],
   agy: ['antigravity'],
   qwen: ['qwen'],
+  iflow: ['iflow'],
 };
 
 /**
@@ -327,7 +336,7 @@ export function getAuthStatus(provider: CLIProxyProvider): AuthStatus {
  * Get auth status for all providers
  */
 export function getAllAuthStatus(): AuthStatus[] {
-  const providers: CLIProxyProvider[] = ['gemini', 'codex', 'agy', 'qwen'];
+  const providers: CLIProxyProvider[] = ['gemini', 'codex', 'agy', 'qwen', 'iflow'];
   return providers.map(getAuthStatus);
 }
 
diff --git a/src/cliproxy/config-generator.ts b/src/cliproxy/config-generator.ts
index 9c6cde6c..c267bc29 100644
--- a/src/cliproxy/config-generator.ts
+++ b/src/cliproxy/config-generator.ts
@@ -12,7 +12,7 @@ import * as fs from 'fs';
 import * as path from 'path';
 import { getCcsDir } from '../utils/config-manager';
 import { CLIProxyProvider, ProviderConfig, ProviderModelMapping } from './types';
-import { getModelMappingFromConfig } from './base-config-loader';
+import { getModelMappingFromConfig, getEnvVarsFromConfig } from './base-config-loader';
 
 /** Settings file structure for user overrides */
 interface ProviderSettings {
@@ -31,6 +31,7 @@ const PROVIDER_DISPLAY_NAMES: Record<CLIProxyProvider, string> = {
   codex: 'Codex',
   agy: 'Antigravity',
   qwen: 'Qwen Code',
+  iflow: 'iFlow',
 };
 
 /**
@@ -197,7 +198,11 @@ export function getClaudeEnvVars(
 ): NodeJS.ProcessEnv {
   const models = getModelMapping(provider);
 
-  return {
+  // Base env vars from config file (includes ANTHROPIC_MAX_TOKENS, etc.)
+  const baseEnvVars = getEnvVarsFromConfig(provider);
+
+  // Core env vars that we always set dynamically
+  const coreEnvVars = {
     // Provider-specific endpoint - routes to correct provider via URL path
     ANTHROPIC_BASE_URL: `http://127.0.0.1:${port}/api/provider/${provider}`,
     ANTHROPIC_AUTH_TOKEN: CCS_INTERNAL_API_KEY,
@@ -206,6 +211,23 @@ export function getClaudeEnvVars(
     ANTHROPIC_DEFAULT_SONNET_MODEL: models.sonnetModel || models.claudeModel,
     ANTHROPIC_DEFAULT_HAIKU_MODEL: models.haikuModel || models.claudeModel,
   };
+
+  // Filter out core env vars from base config to avoid conflicts
+  const {
+    ANTHROPIC_BASE_URL: _baseUrl,
+    ANTHROPIC_AUTH_TOKEN: _authToken,
+    ANTHROPIC_MODEL: _model,
+    ANTHROPIC_DEFAULT_OPUS_MODEL: _opusModel,
+    ANTHROPIC_DEFAULT_SONNET_MODEL: _sonnetModel,
+    ANTHROPIC_DEFAULT_HAIKU_MODEL: _haikuModel,
+    ...additionalEnvVars
+  } = baseEnvVars;
+
+  // Merge core env vars with additional env vars from base config
+  return {
+    ...coreEnvVars,
+    ...additionalEnvVars, // Includes ANTHROPIC_MAX_TOKENS, etc.
+  };
 }
 
 /**
diff --git a/src/cliproxy/types.ts b/src/cliproxy/types.ts
index a9ae85a7..f42e4edc 100644
--- a/src/cliproxy/types.ts
+++ b/src/cliproxy/types.ts
@@ -46,8 +46,6 @@ export interface BinaryManagerConfig {
   maxRetries: number;
   /** Enable verbose logging */
   verbose: boolean;
-  /** Force specific version (skip auto-upgrade to latest) */
-  forceVersion?: boolean;
 }
 
 /**
@@ -113,8 +111,9 @@ export interface DownloadResult {
  * - codex: OpenAI Codex via OAuth
  * - agy: Antigravity via OAuth (short name for easy usage)
  * - qwen: Qwen Code via OAuth (qwen3-coder)
+ * - iflow: iFlow via OAuth
  */
-export type CLIProxyProvider = 'gemini' | 'codex' | 'agy' | 'qwen';
+export type CLIProxyProvider = 'gemini' | 'codex' | 'agy' | 'qwen' | 'iflow';
 
 /**
  * CLIProxy config.yaml structure (minimal)