Abstract: Anti-jump circuit is one of the important functional circuits in the on-off circuit, but usually due to the improper match between the circuit breaker body mechanism and the protection device anti-jump circuit, the loss of remote anti-jump function, the mismatch between the operation current of the anti-jump relay and the setting current parameter of the on-off coil, the unreasonable design of the self-holding circuit of the anti-jump relay will lead to the failure of the circuit breaker protection anti-jump circuit. Make it lose the "anti-jump" function. This paper analyzes and compares the reasons causing the failure of circuit breaker protection and anti-jump function, and discusses and puts forward the corresponding solutions according to the defects of circuit breaker protection and anti-jump function found in field debugging and maintenance.