The utility model provides a central air conditioning water pump motor's starting circuit, central air conditioning includes a plurality of water pump motor, including connecting a plurality of water pump motor drive circuit and a plurality of delay circuit between power supply polarity in parallel, in the front drive circuit switches on the corresponding delay circuit time delay of back accessible and switches on the drive circuit after, thereby postpone in proper order to switch on each drive circuit in order to start a plurality of water pump motor in proper order, drive circuit in the front is provided with contactor coil, delay circuit is provided with the time relay coil and is used for switching on delay circuit's contactor contact, drive circuit after is provided with the time relay contact that is used for switching on drive circuit. The utility model discloses a plurality of water pump motor that utilize time relay control central air conditioning start in proper order, prevent that the staff from starting whole water pump motor because of habituation is violating the regulations simultaneously, avoid causing the tripping operation of electricity distribution room high voltage circuit breaker, ensure electrical safety.