diff --git a/packages/mitmproxy/src/lib/proxy/common/util.js b/packages/mitmproxy/src/lib/proxy/common/util.js
index 9335ae6..1a0f04a 100644
--- a/packages/mitmproxy/src/lib/proxy/common/util.js
+++ b/packages/mitmproxy/src/lib/proxy/common/util.js
@@ -29,10 +29,16 @@ function createHttpsAgent (timeoutConfig, verifySsl) {
   if (!httpsAgentCache[key]) {
     verifySsl = !!verifySsl
 
+    // 证书回调函数
+    const checkServerIdentity = (host, cert) => {
+      log.info(`checkServerIdentity: ${host}, CN: ${cert.subject.CN}, C: ${cert.subject.C || cert.issuer.C}, ST: ${cert.subject.ST || cert.issuer.ST}, bits: ${cert.bits}`)
+    }
+
     const agent = new HttpsAgent({
       keepAlive: true,
       timeout: timeoutConfig.timeout,
       keepAliveTimeout: timeoutConfig.keepAliveTimeout,
+      checkServerIdentity,
       rejectUnauthorized: verifySsl
     })
 
@@ -40,6 +46,7 @@ function createHttpsAgent (timeoutConfig, verifySsl) {
       keepAlive: true,
       timeout: timeoutConfig.timeout,
       keepAliveTimeout: timeoutConfig.keepAliveTimeout,
+      checkServerIdentity,
       rejectUnauthorized: false
     })