A vehicle temperature management system, comprising: a compressor, comprising an input port and an output port, wherein the compressor is configured to compress a first refrigerant input from the input port, and output the compressed first refrigerant from the output port; a first temperature sensor, configured to detect a first temperature of the first refrigerant input from the input port to the compressor; a first heat exchanger, comprising a first interface and a second interface for ingress and egress of the first refrigerant, wherein the first heat exchanger is configured to cool the first refrigerant input to the first heat exchanger; a depressurization apparatus, comprising a third interface and a fourth interface for ingress and egress of the first refrigerant, wherein the third interface is connected to the second interface, and the depressurization apparatus is communicatively connected to the first temperature sensor, to depressurize the input first refrigerant based on the first temperature; a heat exchange plate, comprising a fifth interface and a sixth interface for ingress and egress of the first refrigerant, wherein the fifth interface is connected to the fourth interface, and the heat exchange plate is configured to exchange heat between the input first refrigerant and a management object of the vehicle temperature management system; a four-way valve, comprising a first port, a second port, a third port, and a fourth port, wherein the first port is connected to the sixth interface, the second port is connected to the output port, the third port is connected to the first interface, the fourth port is connected to the input port, the four-way valve is configured to: control the first port to be connected to the fourth port and control the second port to be connected to the third port in a cooling mode for cooling the management object through the heat exchange plate, and the four-way valve is configured to: control the first port to be connected to the second port and control the fourth port to be connected to the third port in a heating mode for heating the management object through the heat exchange plate; and characterized in that the system comprises a second heat exchanger, configured to: heat the first refrigerant that flows from the sixth interface to the input port in a mode of the management object being cooled through the heat exchange plate; and cool the first refrigerant that flows from the output port to the sixth interface in a mode of the management object being heated through the heat exchange plate. a compressor, comprising an input port and an output port, wherein the compressor is configured to compress a first refrigerant input from the input port, and output the compressed first refrigerant from the output port; a first temperature sensor, configured to detect a first temperature of the first refrigerant input from the input port to the compressor; a first heat exchanger, comprising a first interface and a second interface for ingress and egress of the first refrigerant, wherein the first heat exchanger is configured to cool the first refrigerant input to the first heat exchanger; a depressurization apparatus, comprising a third interface and a fourth interface for ingress and egress of the first refrigerant, wherein the third interface is connected to the second interface, and the depressurization apparatus is communicatively connected to the first temperature sensor, to depressurize the input first refrigerant based on the first temperature; a heat exchange plate, comprising a fifth interface and a sixth interface for ingress and egress of the first refrigerant, wherein the fifth interface is connected to the fourth interface, and the heat exchange plate is configured to exchange heat between the input first refrigerant and a management object of the vehicle temperature management system; a four-way valve, comprising a first port, a second port, a third port, and a fourth port, wherein the first port is connected to the sixth interface, the second port is connected to the output port, the third port is connected to the first interface, the fourth port is connected to the input port, the four-way valve is configured to: control the first port to be connected to the fourth port and control the second port to be connected to the third port in a cooling mode for cooling the management object through the heat exchange plate, and the four-way valve is configured to: control the first port to be connected to the second port and control the fourth port to be connected to the third port in a heating mode for heating the management object through the heat exchange plate; and characterized in that the system comprises a second heat exchanger, configured to: heat the first refrigerant that flows from the sixth interface to the input port in a mode of the management object being cooled through the heat exchange plate; and cool the first refrigerant that flows from the output port to the sixth interface in a mode of the management object being heated through the heat exchange plate.