The invention provides a control method for a cooling system, and a vehicle. The control method for a cooling system comprises the following steps: S1, detecting water temperature of an engine; S2, according to the water temperature of the engine, controlling a coolant flow distribution device to adjust flow rate of a coolant of at least a loop of a bypass loop, a great circulating loop, and a warm air loop. The control method for a cooling system can effectively reduce oil consumption, reduce emission, and improve riding comfort.