diff --git a/composer.json b/composer.json
index 9c562a6..f5714d0 100644
--- a/composer.json
+++ b/composer.json
@@ -30,6 +30,9 @@
     "autoload": {
         "psr-4": {
             "Dhd\\Micro\\Core\\": "src/"
-        }
+        },
+        "files": [
+            "src/helpers.php"
+        ]
     }
 }
diff --git a/src/Library/LogHelper.php b/src/Library/LogHelper.php
new file mode 100644
index 0000000..1a0bb5e
--- /dev/null
+++ b/src/Library/LogHelper.php
@@ -0,0 +1,80 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Dhd\Micro\Core\Library;
+
+use Hyperf\Context\ApplicationContext;
+use Hyperf\Logger\LoggerFactory;
+use Hyperf\Rpc\Context as RpcContext;
+use Psr\Log\LoggerInterface;
+
+/**
+ * 统一日志静态入口，支持 trace_id 注入与多通道.
+ */
+class LogHelper
+{
+    public static function error(string $message, array $context = []): void
+    {
+        self::log('error', $message, $context, 'error');
+    }
+
+    public static function warning(string $message, array $context = []): void
+    {
+        self::log('warning', $message, $context);
+    }
+
+    public static function info(string $message, array $context = []): void
+    {
+        self::log('info', $message, $context);
+    }
+
+    public static function debug(string $message, array $context = []): void
+    {
+        self::log('debug', $message, $context);
+    }
+
+    public static function business(string $message, array $context = []): void
+    {
+        self::log('info', $message, $context, 'business');
+    }
+
+    public static function sql(string $sql, array $bindings = [], float $time = 0): void
+    {
+        $message = sprintf('SQL: %s | Bindings: %s | Time: %.2fms', $sql, json_encode($bindings), $time);
+        self::log('debug', $message, [], 'sql');
+    }
+
+    protected static function log(string $level, string $message, array $context = [], string $channel = 'default'): void
+    {
+        $logger = self::getLogger($channel);
+        $enrichedContext = array_merge($context, self::getTraceContext());
+        $logger->log($level, $message, $enrichedContext);
+    }
+
+    protected static function getLogger(string $channel = 'default'): LoggerInterface
+    {
+        $container = ApplicationContext::getContainer();
+        $loggerFactory = $container->get(LoggerFactory::class);
+        return $loggerFactory->get($channel);
+    }
+
+    protected static function getTraceContext(): array
+    {
+        $context = [];
+
+        try {
+            $container = ApplicationContext::getContainer();
+            $rpcContext = $container->get(RpcContext::class);
+
+            $traceId = $rpcContext->get('trace_id');
+            if ($traceId) {
+                $context['trace_id'] = $traceId;
+            }
+        } catch (Throwable $e) {
+            // 上下文不可用时静默降级
+        }
+
+        return $context;
+    }
+}
diff --git a/src/helpers.php b/src/helpers.php
new file mode 100644
index 0000000..d9f6051
--- /dev/null
+++ b/src/helpers.php
@@ -0,0 +1,157 @@
+<?php
+
+declare(strict_types=1);
+
+use Hyperf\Context\ApplicationContext;
+use Hyperf\Contract\StdoutLoggerInterface;
+use Hyperf\Logger\LoggerFactory;
+use function Hyperf\Config\config;
+
+if (! function_exists('getNacosConfig')) {
+    /**
+     * 获取nacos配置.
+     */
+    function getNacosConfig(string $key, $default = null)
+    {
+        return config('nacos_config.' . $key, $default);
+    }
+}
+
+if (! function_exists('get_file_domain')) {
+    /**
+     * 获取文件中心域名.
+     */
+    function get_file_domain()
+    {
+        return getNacosConfig('file_domain', '');
+    }
+}
+
+if (! function_exists('c_get')) {
+    function c_get($name)
+    {
+        return ApplicationContext::getContainer()->get($name);
+    }
+}
+
+if (! function_exists('f_log')) {
+    /**
+     * 程序日志.
+     */
+    function f_log(string $msg, mixed $data)
+    {
+        $fatory = ApplicationContext::getContainer()->get(LoggerFactory::class);
+        $logger = $fatory->get('log', 'default');
+        $content = [
+            'msg' => $msg,
+            'data' => $data,
+        ];
+        $logger->info(json_encode($content, JSON_UNESCAPED_UNICODE));
+    }
+}
+
+if (! function_exists('f_debug')) {
+    /**
+     * debug日志.
+     */
+    function f_debug($msg)
+    {
+        $logger = ApplicationContext::getContainer()->get(StdoutLoggerInterface::class);
+        $logger->info((is_array($msg) || is_object($msg)) ? json_encode($msg, JSON_UNESCAPED_UNICODE) : $msg);
+    }
+}
+
+if (! function_exists('add_file_domain')) {
+    /**
+     * 为内容中的图片路径添加文件域名.
+     */
+    function add_file_domain($content, $simple = false, $fileDomain = null)
+    {
+        if (empty($content)) {
+            return $content;
+        }
+
+        $fileDomain = $fileDomain ?? get_file_domain() . '/';
+        if ($simple) {
+            if (is_string($content) && preg_match('#^(?:https?:)?//#i', $content)) {
+                return $content;
+            }
+            return $fileDomain . ltrim($content, '/');
+        }
+
+        $content = preg_replace_callback('/<img([^>]*src\s*=\s*["\'])([^"\']*)(["\'][^>]*)>/i', function ($matches) use ($fileDomain) {
+            $prefix = $matches[1];
+            $src = $matches[2];
+            $suffix = $matches[3];
+
+            if ($src === '' || preg_match('#^(?:https?:)?//#i', $src) || str_starts_with($src, 'data:')) {
+                return $matches[0];
+            }
+            $newSrc = rtrim($fileDomain, '/') . '/' . ltrim($src, '/');
+            return '<img' . $prefix . $newSrc . $suffix . '>';
+        }, $content);
+
+        return $content;
+    }
+}
+
+if (! function_exists('remove_file_domain')) {
+    /**
+     * 移除内容中图片的文件域名.
+     */
+    function remove_file_domain($content, $fileDomain = null)
+    {
+        if (empty($content)) {
+            return $content;
+        }
+        $fileDomain = $fileDomain ?? get_file_domain();
+        $fileDomain = $fileDomain ? rtrim($fileDomain, '/') : '';
+        if ($fileDomain === '') {
+            return $content;
+        }
+        $pattern = '#' . preg_quote($fileDomain, '#') . '/+#';
+        return preg_replace($pattern, '', $content);
+    }
+}
+
+if (! function_exists('copy_file_safely')) {
+    /**
+     * 复制文件到指定路径，若目标目录不存在则递归创建.
+     */
+    function copy_file_safely($sourceFile, $destinationFile)
+    {
+        $safeLog = function ($msg, $data) {
+            try {
+                f_log($msg, $data);
+            } catch (Throwable $e) {
+                // 忽略日志错误
+            }
+        };
+
+        if (! file_exists($sourceFile)) {
+            $safeLog('源文件不存在', $sourceFile);
+            return false;
+        }
+
+        $destinationDir = dirname($destinationFile);
+        if (! is_dir($destinationDir)) {
+            if (! mkdir($destinationDir, 0755, true)) {
+                $safeLog('无法创建目标目录', $destinationDir);
+                return false;
+            }
+        }
+
+        if (! is_writable($destinationDir)) {
+            $safeLog('目标目录不可写', $destinationDir);
+            return false;
+        }
+
+        if (copy($sourceFile, $destinationFile)) {
+            return true;
+        }
+
+        $error = error_get_last();
+        $safeLog('文件复制失败', $error['message'] ?? '未知错误');
+        return false;
+    }
+}