A thermal control system of an electric vehicle, comprising: a flow switch comprising a first terminal, a second terminal, a third terminal and a fourth terminal; a liquid temperature adjuster comprising an inlet and an outlet; a cabinet heat exchanger comprising an inlet and an outlet; a motor cooling channel comprising an inlet and an outlet; a radiator comprising an inlet and an outlet; wherein the flow switch adjusts a circulation path of a cooling liquid according to an operation mode of the thermal control system, characterized in that the inlet of the liquid temperature adjuster is connected with the first terminal of the flow switch; the inlet of the cabinet heat exchanger is connected with the outlet of the liquid temperature adjuster, and the outlet of the cabinet heat exchanger is connected with the second terminal of the flow switch; the outlet of the motor cooling channel is connected with the third terminal of the flow switch; and the inlet of the radiator is connected with the fourth terminal of the flow switch, and the outlet of the radiator is connected with the inlet of the motor cooling channel, wherein if the operation mode is a normal cooling mode, the first terminal and the second terminal of the flow switch are in communication with each other, the third terminal and the fourth terminal of the flow switch are in communication with each other, and the cooling liquid from the liquid temperature adjuster is transmitted to the cabinet heat exchanger, wherein if the operation mode is a heat recovery mode, the first terminal and the third terminal of the flow switch are in communication with each other, the second terminal and the fourth terminal of the flow switch are in communication with each other, and the cooling liquid from the motor cooling channel is transmitted to the cabinet heat exchanger, wherein if the operation mode is an assisted-cooling mode, the first terminal and the third terminal of the flow switch are in communication with each other, the second terminal and the fourth terminal of the flow switch are in communication with each other, and the cooling liquid from the liquid temperature adjuster is transmitted to the motor cooling channel. a flow switch comprising a first terminal, a second terminal, a third terminal and a fourth terminal; a liquid temperature adjuster comprising an inlet and an outlet; a cabinet heat exchanger comprising an inlet and an outlet; a motor cooling channel comprising an inlet and an outlet; a radiator comprising an inlet and an outlet; wherein the flow switch adjusts a circulation path of a cooling liquid according to an operation mode of the thermal control system, characterized in that the inlet of the liquid temperature adjuster is connected with the first terminal of the flow switch; the inlet of the cabinet heat exchanger is connected with the outlet of the liquid temperature adjuster, and the outlet of the cabinet heat exchanger is connected with the second terminal of the flow switch; the outlet of the motor cooling channel is connected with the third terminal of the flow switch; and the inlet of the radiator is connected with the fourth terminal of the flow switch, and the outlet of the radiator is connected with the inlet of the motor cooling channel, wherein if the operation mode is a normal cooling mode, the first terminal and the second terminal of the flow switch are in communication with each other, the third terminal and the fourth terminal of the flow switch are in communication with each other, and the cooling liquid from the liquid temperature adjuster is transmitted to the cabinet heat exchanger, wherein if the operation mode is a heat recovery mode, the first terminal and the third terminal of the flow switch are in communication with each other, the second terminal and the fourth terminal of the flow switch are in communication with each other, and the cooling liquid from the motor cooling channel is transmitted to the cabinet heat exchanger, wherein if the operation mode is an assisted-cooling mode, the first terminal and the third terminal of the flow switch are in communication with each other, the second terminal and the fourth terminal of the flow switch are in communication with each other, and the cooling liquid from the liquid temperature adjuster is transmitted to the motor cooling channel.