The invention provides a power battery cooling system for an electric vehicle and the electric vehicle. The cooling system comprises an air conditioner refrigerating system and a heat exchanger. The heat exchanger is arranged on a refrigerating flow path of the air conditioner refrigerating system and used for exchanging heat with the refrigerating flow path. The heat exchanger is in contact witha battery pack through the cooling loop so as to cool the battery pack. Through the adoption of the scheme, the system can effectively reduce the leakage risk in the power battery cooling process, andimproves the power battery cooling safety. According to the scheme provided by the invention, the system is simple and reasonable in system structure, can be suitable for power heat dissipation of acurrent electric vehicle, is low in cost and is easy in assembly.