diff --git a/backend/services/blockchain-service/src/domain/services/chain-config.service.ts b/backend/services/blockchain-service/src/domain/services/chain-config.service.ts
index 91d7a0f0..29f86e68 100644
--- a/backend/services/blockchain-service/src/domain/services/chain-config.service.ts
+++ b/backend/services/blockchain-service/src/domain/services/chain-config.service.ts
@@ -98,9 +98,13 @@ export class ChainConfigService {
 
   /**
    * 获取所有支持的链
+   *
+   * 注意：暂时只支持 KAVA 链，BSC 链暂未启用
    */
   getSupportedChains(): ChainTypeEnum[] {
-    return Array.from(this.configs.keys());
+    // TODO: BSC 链暂时禁用，未来需要时可以恢复
+    // return Array.from(this.configs.keys());
+    return [ChainTypeEnum.KAVA];
   }
 
   /**
diff --git a/backend/services/blockchain-service/src/infrastructure/kafka/deposit-ack-consumer.service.ts b/backend/services/blockchain-service/src/infrastructure/kafka/deposit-ack-consumer.service.ts
index caba6f76..16ff9aab 100644
--- a/backend/services/blockchain-service/src/infrastructure/kafka/deposit-ack-consumer.service.ts
+++ b/backend/services/blockchain-service/src/infrastructure/kafka/deposit-ack-consumer.service.ts
@@ -48,13 +48,17 @@ export class DepositAckConsumerService implements OnModuleInit, OnModuleDestroy
     this.logger.log(`[INIT] Brokers: ${brokers}`);
     this.logger.log(`[INIT] Topics: ${Object.values(ACK_TOPICS).join(', ')}`);
 
+    // 企业级重试配置：指数退避，最多重试约 2.5 小时
     this.kafka = new Kafka({
       clientId,
       brokers,
       logLevel: logLevel.WARN,
       retry: {
-        initialRetryTime: 100,
-        retries: 8,
+        initialRetryTime: 1000,        // 1 秒
+        maxRetryTime: 300000,          // 最大 5 分钟
+        retries: 15,                   // 最多 15 次
+        multiplier: 2,                 // 指数退避因子
+        restartOnFailure: async () => true,
       },
     });
 
diff --git a/backend/services/blockchain-service/src/infrastructure/kafka/mpc-event-consumer.service.ts b/backend/services/blockchain-service/src/infrastructure/kafka/mpc-event-consumer.service.ts
index fd948178..cff98b82 100644
--- a/backend/services/blockchain-service/src/infrastructure/kafka/mpc-event-consumer.service.ts
+++ b/backend/services/blockchain-service/src/infrastructure/kafka/mpc-event-consumer.service.ts
@@ -91,13 +91,17 @@ export class MpcEventConsumerService implements OnModuleInit, OnModuleDestroy {
     this.logger.log(`[INIT] Brokers: ${brokers.join(', ')}`);
     this.logger.log(`[INIT] Topics to subscribe: ${Object.values(MPC_TOPICS).join(', ')}`);
 
+    // 企业级重试配置：指数退避，最多重试约 2.5 小时
     this.kafka = new Kafka({
       clientId,
       brokers,
       logLevel: logLevel.WARN,
       retry: {
-        initialRetryTime: 100,
-        retries: 8,
+        initialRetryTime: 1000,        // 1 秒
+        maxRetryTime: 300000,          // 最大 5 分钟
+        retries: 15,                   // 最多 15 次
+        multiplier: 2,                 // 指数退避因子
+        restartOnFailure: async () => true,
       },
     });
 
diff --git a/backend/services/blockchain-service/src/infrastructure/kafka/withdrawal-event-consumer.service.ts b/backend/services/blockchain-service/src/infrastructure/kafka/withdrawal-event-consumer.service.ts
index 3ad6b11d..7d905103 100644
--- a/backend/services/blockchain-service/src/infrastructure/kafka/withdrawal-event-consumer.service.ts
+++ b/backend/services/blockchain-service/src/infrastructure/kafka/withdrawal-event-consumer.service.ts
@@ -50,13 +50,17 @@ export class WithdrawalEventConsumerService implements OnModuleInit, OnModuleDes
     this.logger.log(`[INIT] Brokers: ${brokers.join(', ')}`);
     this.logger.log(`[INIT] Topics: ${Object.values(WITHDRAWAL_TOPICS).join(', ')}`);
 
+    // 企业级重试配置：指数退避，最多重试约 2.5 小时
     this.kafka = new Kafka({
       clientId,
       brokers,
       logLevel: logLevel.WARN,
       retry: {
-        initialRetryTime: 100,
-        retries: 8,
+        initialRetryTime: 1000,        // 1 秒
+        maxRetryTime: 300000,          // 最大 5 分钟
+        retries: 15,                   // 最多 15 次
+        multiplier: 2,                 // 指数退避因子
+        restartOnFailure: async () => true,
       },
     });
 
diff --git a/backend/services/identity-service/src/infrastructure/kafka/blockchain-event-consumer.service.ts b/backend/services/identity-service/src/infrastructure/kafka/blockchain-event-consumer.service.ts
index 63786202..a5928a03 100644
--- a/backend/services/identity-service/src/infrastructure/kafka/blockchain-event-consumer.service.ts
+++ b/backend/services/identity-service/src/infrastructure/kafka/blockchain-event-consumer.service.ts
@@ -51,13 +51,17 @@ export class BlockchainEventConsumerService implements OnModuleInit, OnModuleDes
     this.logger.log(`[INIT] Brokers: ${brokers.join(', ')}`);
     this.logger.log(`[INIT] Topics to subscribe: ${Object.values(BLOCKCHAIN_TOPICS).join(', ')}`);
 
+    // 企业级重试配置：指数退避，最多重试约 2.5 小时
     this.kafka = new Kafka({
       clientId,
       brokers,
       logLevel: logLevel.WARN,
       retry: {
-        initialRetryTime: 100,
-        retries: 8,
+        initialRetryTime: 1000,        // 1 秒
+        maxRetryTime: 300000,          // 最大 5 分钟
+        retries: 15,                   // 最多 15 次
+        multiplier: 2,                 // 指数退避因子
+        restartOnFailure: async () => true,
       },
     });
 
diff --git a/backend/services/identity-service/src/infrastructure/kafka/mpc-event-consumer.service.ts b/backend/services/identity-service/src/infrastructure/kafka/mpc-event-consumer.service.ts
index f3b32448..67ea972b 100644
--- a/backend/services/identity-service/src/infrastructure/kafka/mpc-event-consumer.service.ts
+++ b/backend/services/identity-service/src/infrastructure/kafka/mpc-event-consumer.service.ts
@@ -95,13 +95,17 @@ export class MpcEventConsumerService implements OnModuleInit, OnModuleDestroy {
     this.logger.log(`[INIT] Brokers: ${brokers.join(', ')}`);
     this.logger.log(`[INIT] Topics to subscribe: ${Object.values(MPC_TOPICS).join(', ')}`);
 
+    // 企业级重试配置：指数退避，最多重试约 2.5 小时
     this.kafka = new Kafka({
       clientId,
       brokers,
       logLevel: logLevel.WARN,
       retry: {
-        initialRetryTime: 100,
-        retries: 8,
+        initialRetryTime: 1000,        // 1 秒
+        maxRetryTime: 300000,          // 最大 5 分钟
+        retries: 15,                   // 最多 15 次
+        multiplier: 2,                 // 指数退避因子
+        restartOnFailure: async () => true,
       },
     });
 
diff --git a/backend/services/wallet-service/src/infrastructure/kafka/deposit-event-consumer.service.ts b/backend/services/wallet-service/src/infrastructure/kafka/deposit-event-consumer.service.ts
index a010d5da..da4f19c2 100644
--- a/backend/services/wallet-service/src/infrastructure/kafka/deposit-event-consumer.service.ts
+++ b/backend/services/wallet-service/src/infrastructure/kafka/deposit-event-consumer.service.ts
@@ -49,13 +49,21 @@ export class DepositEventConsumerService implements OnModuleInit, OnModuleDestro
     this.logger.log(`[INIT] Brokers: ${brokers.join(', ')}`);
     this.logger.log(`[INIT] Topics: ${Object.values(DEPOSIT_TOPICS).join(', ')}`);
 
+    // 企业级重试配置：
+    // - 初始重试间隔 1 秒
+    // - 最大重试间隔 5 分钟
+    // - 最多重试 15 次（指数退避约 2.5 小时）
+    // - 乘数因子 2（每次重试间隔翻倍）
     this.kafka = new Kafka({
       clientId,
       brokers,
       logLevel: logLevel.WARN,
       retry: {
-        initialRetryTime: 100,
-        retries: 8,
+        initialRetryTime: 1000,        // 1 秒
+        maxRetryTime: 300000,          // 最大 5 分钟
+        retries: 15,                   // 最多 15 次
+        multiplier: 2,                 // 指数退避因子
+        restartOnFailure: async () => true,  // 失败后重启消费者
       },
     });
 
diff --git a/backend/services/wallet-service/src/infrastructure/kafka/planting-event-consumer.service.ts b/backend/services/wallet-service/src/infrastructure/kafka/planting-event-consumer.service.ts
index beb87b03..5aa302e1 100644
--- a/backend/services/wallet-service/src/infrastructure/kafka/planting-event-consumer.service.ts
+++ b/backend/services/wallet-service/src/infrastructure/kafka/planting-event-consumer.service.ts
@@ -46,13 +46,17 @@ export class PlantingEventConsumerService implements OnModuleInit, OnModuleDestr
     this.logger.log(`[INIT] Brokers: ${brokers.join(', ')}`);
     this.logger.log(`[INIT] Topics: ${Object.values(PLANTING_TOPICS).join(', ')}`);
 
+    // 企业级重试配置：指数退避，最多重试约 2.5 小时
     this.kafka = new Kafka({
       clientId: `${clientId}-planting`,
       brokers,
       logLevel: logLevel.WARN,
       retry: {
-        initialRetryTime: 100,
-        retries: 8,
+        initialRetryTime: 1000,        // 1 秒
+        maxRetryTime: 300000,          // 最大 5 分钟
+        retries: 15,                   // 最多 15 次
+        multiplier: 2,                 // 指数退避因子
+        restartOnFailure: async () => true,
       },
     });
 
diff --git a/backend/services/wallet-service/src/infrastructure/kafka/withdrawal-event-consumer.service.ts b/backend/services/wallet-service/src/infrastructure/kafka/withdrawal-event-consumer.service.ts
index 367660bf..a7c24d4e 100644
--- a/backend/services/wallet-service/src/infrastructure/kafka/withdrawal-event-consumer.service.ts
+++ b/backend/services/wallet-service/src/infrastructure/kafka/withdrawal-event-consumer.service.ts
@@ -61,13 +61,17 @@ export class WithdrawalEventConsumerService implements OnModuleInit, OnModuleDes
     this.logger.log(`[INIT] GroupId: ${groupId}`);
     this.logger.log(`[INIT] Brokers: ${brokers.join(', ')}`);
 
+    // 企业级重试配置：指数退避，最多重试约 2.5 小时
     this.kafka = new Kafka({
       clientId,
       brokers,
       logLevel: logLevel.WARN,
       retry: {
-        initialRetryTime: 100,
-        retries: 8,
+        initialRetryTime: 1000,        // 1 秒
+        maxRetryTime: 300000,          // 最大 5 分钟
+        retries: 15,                   // 最多 15 次
+        multiplier: 2,                 // 指数退避因子
+        restartOnFailure: async () => true,
       },
     });