A method for controlling a water pump of an air conditioner, comprising: acquiring a state of a liquid level switch of the air conditioner, an operation state of the air conditioner, and an outdoor ambient temperature; and determining a starting time of the water pump of the air conditioner according to the acquired state of the liquid level switch of the air conditioner, the acquired operation state of the air conditioner, and the acquired outdoor ambient temperature; characterized in that a step of determining the starting time of the water pump of the air conditioner according to the acquired state of the liquid level switch of the air conditioner, the acquired operation state of the air conditioner, and the acquired outdoor ambient temperature, comprises: detecting whether the liquid level switch of the air conditioner is in an open state; if the liquid level switch of the air conditioner is in the open state, then controlling the water pump of the air conditioner to be turned on; and if the water pump of the air conditioner is not in the open state, then determining whether a current operation state of the air conditioner is a heating mode, and if the current operation state of the air conditioner is the heating mode, then determining the starting time of the water pump of the air conditioner according to the outdoor ambient temperature. acquiring a state of a liquid level switch of the air conditioner, an operation state of the air conditioner, and an outdoor ambient temperature; and determining a starting time of the water pump of the air conditioner according to the acquired state of the liquid level switch of the air conditioner, the acquired operation state of the air conditioner, and the acquired outdoor ambient temperature; characterized in that a step of determining the starting time of the water pump of the air conditioner according to the acquired state of the liquid level switch of the air conditioner, the acquired operation state of the air conditioner, and the acquired outdoor ambient temperature, comprises: detecting whether the liquid level switch of the air conditioner is in an open state; if the liquid level switch of the air conditioner is in the open state, then controlling the water pump of the air conditioner to be turned on; and if the water pump of the air conditioner is not in the open state, then determining whether a current operation state of the air conditioner is a heating mode, and if the current operation state of the air conditioner is the heating mode, then determining the starting time of the water pump of the air conditioner according to the outdoor ambient temperature. detecting whether the liquid level switch of the air conditioner is in an open state; if the liquid level switch of the air conditioner is in the open state, then controlling the water pump of the air conditioner to be turned on; and if the water pump of the air conditioner is not in the open state, then determining whether a current operation state of the air conditioner is a heating mode, and if the current operation state of the air conditioner is the heating mode, then determining the starting time of the water pump of the air conditioner according to the outdoor ambient temperature.