The present disclosure relates to a method for resetting life diagnosis alarm of a contact of a contactor, including the following steps:
Step A: detecting a reset signal by a microcontrol unit;
Step B: when the microcontrol unit has detected the reset signal, checking the state of the diagnosis alarm through the microcontrol unit;
and when the diagnosis alarm is in an active state, the microcontrol unit: Step C: controlling the indicator to give a first indication signal for confirming a reset operation of the diagnosis alarm; Step D: resetting life diagnosis data; Step E: controlling the opening and closing of the contact of the contactor through an actuator.