The utility model discloses a submersible pump starting protector, which is composed of a three-phase power supply A, B, C, a leakage protection circuit, an over-voltage protection circuit, an overload protection circuit, an execution circuit and a motor to be protected. One end of the leakage protection circuit Connected to the three-phase power supply, the other end is connected to the execution circuit; one end of the leakage protection circuit is connected to the three-phase power supply and the other end is connected to the execution circuit; the output of the execution circuit controls the motor to be protected. The device uses A, B, C three-phase AC power supply into the leakage protection circuit and over-voltage protection circuit and the implementation of the circuit structure, with a large current, less components, low cost, simple circuit, good function, practicality and so on advantage. This patent project wants to transfer.