The utility model belongs to the technical field of electric vehicles, and particularly provides an electric vehicle and a temperature control system thereof. The utility model aims to solve the problem that waste heat of a motor and a power battery of an existing electric automobile is not provided for a driving cabin. Therefore, the temperature control system mainly comprises a first heat exchange channel, a second heat exchange channel and a heat exchanger. Wherein the first heat exchange channel is used for enabling cooling liquid to exchange heat with the power battery system; and the second heat exchange channel is used for enabling the cooling liquid to exchange heat with the electric driving system. The heat exchanger comprises a first channel and a second channel, the first channel can be selectively communicated with one or two of the first heat exchange channel and the second heat exchange channel to form a circulation loop, and the second channel is connected into a loop ofan air conditioning system of the electric automobile in series. Therefore, the temperature control system can carry waste heat generated by the motor and the power battery into the air conditioningsystem when the electric automobile runs, and then the waste heat is carried into a driving cabin of the electric automobile through the air conditioning system.