The utility model discloses a heavy-current relay driving and protecting circuit which comprises a relay, a relay drive circuit, a relay open-circuit protection circuit, a relay overcurrent protection circuit and a relay filter circuit, wherein the input end of the relay is connected with the relay drive circuit, and the output end of the relay is connected with the relay open-circuit protection circuit, relay overcurrent protection circuit and relay filter circuit. The heavy-current relay driving and protecting circuit has the advantages that small signals are used to control the relay to drive a heavy-current circuit of a load, heavy current of the load in a high side drive technology can be satisfied, change of load current can be monitored in real time, and overcurrent, open-circuit and short-circuit protection for the load is realized.