diff --git a/docs/en/configuration/env-vars.md b/docs/en/configuration/env-vars.md
index 29d708554..9bdb6fcdb 100644
--- a/docs/en/configuration/env-vars.md
+++ b/docs/en/configuration/env-vars.md
@@ -108,6 +108,33 @@ Overrides the provider's `api_key` field in the configuration file.
 export OPENAI_API_KEY="sk-xxx"
 ```
 
+## Network proxy
+
+The following environment variables are used to configure HTTP/HTTPS proxies for use in network-restricted environments:
+
+| Environment Variable | Description |
+| --- | --- |
+| `HTTPS_PROXY` / `https_proxy` | HTTPS proxy URL |
+| `HTTP_PROXY` / `http_proxy` | HTTP proxy URL |
+
+### `HTTPS_PROXY` / `HTTP_PROXY`
+
+Sets the proxy server address for all HTTP/HTTPS requests. Supports proxy addresses with `http://` and `https://` protocols.
+
+```sh
+export HTTPS_PROXY="http://proxy.example.com:8080"
+export HTTP_PROXY="http://proxy.example.com:8080"
+```
+
+::: tip
+- Environment variable names are case-insensitive; both `HTTPS_PROXY` and `https_proxy` are supported
+- If both `HTTPS_PROXY` and `HTTP_PROXY` are set, `HTTPS_PROXY` takes precedence for HTTPS requests
+:::
+
+::: info Added
+Added in version 1.23.
+:::
+
 ## Other environment variables
 
 | Environment Variable | Description |
diff --git a/docs/zh/configuration/env-vars.md b/docs/zh/configuration/env-vars.md
index 93e56b514..7caaa4c31 100644
--- a/docs/zh/configuration/env-vars.md
+++ b/docs/zh/configuration/env-vars.md
@@ -108,6 +108,33 @@ export OPENAI_BASE_URL="https://api.openai.com/v1"
 export OPENAI_API_KEY="sk-xxx"
 ```
 
+## 网络代理
+
+以下环境变量用于配置 HTTP/HTTPS 代理，在有网络限制的环境中使用：
+
+| 环境变量 | 说明 |
+| --- | --- |
+| `HTTPS_PROXY` / `https_proxy` | HTTPS 代理 URL |
+| `HTTP_PROXY` / `http_proxy` | HTTP 代理 URL |
+
+### `HTTPS_PROXY` / `HTTP_PROXY`
+
+设置代理服务器地址，用于所有 HTTP/HTTPS 请求。支持 `http://` 和 `https://` 协议的代理地址。
+
+```sh
+export HTTPS_PROXY="http://proxy.example.com:8080"
+export HTTP_PROXY="http://proxy.example.com:8080"
+```
+
+::: tip 提示
+- 环境变量名称不区分大小写，同时支持 `HTTPS_PROXY` 和 `https_proxy`
+- 如果同时设置了 `HTTPS_PROXY` 和 `HTTP_PROXY`，`HTTPS_PROXY` 优先用于 HTTPS 请求
+:::
+
+::: info 新增
+新增于 1.23 版本。
+:::
+
 ## 其他环境变量
 
 | 环境变量 | 说明 |
diff --git a/src/kimi_cli/utils/aiohttp.py b/src/kimi_cli/utils/aiohttp.py
index 0fe91b235..d07ff09f1 100644
--- a/src/kimi_cli/utils/aiohttp.py
+++ b/src/kimi_cli/utils/aiohttp.py
@@ -9,4 +9,5 @@
 
 
 def new_client_session() -> aiohttp.ClientSession:
-    return aiohttp.ClientSession(connector=aiohttp.TCPConnector(ssl=_ssl_context))
+    connector = aiohttp.TCPConnector(ssl=_ssl_context)
+    return aiohttp.ClientSession(connector=connector, trust_env=True)
diff --git a/tests/utils/test_aiohttp.py b/tests/utils/test_aiohttp.py
new file mode 100644
index 000000000..7dae03a1b
--- /dev/null
+++ b/tests/utils/test_aiohttp.py
@@ -0,0 +1,58 @@
+"""Tests for aiohttp utility module."""
+
+from __future__ import annotations
+
+import ssl
+from unittest.mock import MagicMock, patch
+
+import aiohttp
+import pytest
+
+from kimi_cli.utils.aiohttp import new_client_session
+
+
+class TestNewClientSession:
+    """Tests for new_client_session function."""
+
+    @pytest.mark.asyncio
+    async def test_trust_env_enabled(self) -> None:
+        """Test that ClientSession is created with trust_env=True for proxy support."""
+        with patch("aiohttp.ClientSession") as mock_session:
+            mock_instance = MagicMock()
+            mock_session.return_value = mock_instance
+
+            result = new_client_session()
+
+            call_kwargs = mock_session.call_args.kwargs
+            assert call_kwargs.get("trust_env") is True
+            assert "connector" in call_kwargs
+            assert result == mock_instance
+
+    @pytest.mark.asyncio
+    async def test_ssl_context_configuration(self) -> None:
+        """Test that SSL context is properly configured with certifi certificates."""
+        with patch("aiohttp.ClientSession") as mock_session:
+            mock_instance = MagicMock()
+            mock_session.return_value = mock_instance
+
+            new_client_session()
+
+            call_kwargs = mock_session.call_args.kwargs
+            assert "connector" in call_kwargs
+            connector = call_kwargs["connector"]
+            assert isinstance(connector, aiohttp.TCPConnector)
+
+    @pytest.mark.asyncio
+    async def test_no_explicit_proxy_set(self) -> None:
+        """Test that no explicit proxy is set, allowing trust_env to handle it."""
+        with patch("aiohttp.ClientSession") as mock_session:
+            mock_instance = MagicMock()
+            mock_session.return_value = mock_instance
+
+            new_client_session()
+
+            call_kwargs = mock_session.call_args.kwargs
+            # Should not have explicit proxy parameter
+            assert "proxy" not in call_kwargs
+            # trust_env should be True to enable env-based proxy detection
+            assert call_kwargs.get("trust_env") is True