A cooling system, comprising a first cooling loop , a second cooling loop , a third cooling loop , a first heat exchanger and a second heat exchanger , wherein the first cooling loop comprises a first fluid pipeline for cooling a first heat-generating component and a first pump set , and the first pump set is configured to cause a first cooling medium to circulate within the first fluid pipeline ; the second cooling loop comprises a second fluid pipeline for cooling a second heat-generating component and a second pump set , the second fluid pipeline comprises a main path and a bypass , and the second pump set is configured to cause a second cooling medium to circulate within the main path or within the main path and the bypass ; the third cooling loop comprises a third fluid pipeline for cooling a third heat-generating component and a third pump set, the third pump set is configured to cause a third cooling medium to circulate within the third fluid pipeline , and the third fluid pipeline communicates with both the first heat exchanger and the second heat exchanger , wherein the third heat-generating component generates more heat than the first heat-generating component , but generates less heat than the second heat-generating component ; the first heat exchanger is configured to thermally couple the first cooling medium, the second cooling medium and the third cooling medium to one another in a manner in which the first cooling medium, the second cooling medium and the third cooling medium are isolated from one another; the second heat exchanger is configured to thermally couple the second cooling medium to the third cooling medium through the bypass in a manner in which the second cooling medium and the third cooling medium are isolated from each another. the first cooling loop comprises a first fluid pipeline for cooling a first heat-generating component and a first pump set , and the first pump set is configured to cause a first cooling medium to circulate within the first fluid pipeline ; the second cooling loop comprises a second fluid pipeline for cooling a second heat-generating component and a second pump set , the second fluid pipeline comprises a main path and a bypass , and the second pump set is configured to cause a second cooling medium to circulate within the main path or within the main path and the bypass ; the third cooling loop comprises a third fluid pipeline for cooling a third heat-generating component and a third pump set, the third pump set is configured to cause a third cooling medium to circulate within the third fluid pipeline , and the third fluid pipeline communicates with both the first heat exchanger and the second heat exchanger , wherein the third heat-generating component generates more heat than the first heat-generating component , but generates less heat than the second heat-generating component ; the first heat exchanger is configured to thermally couple the first cooling medium, the second cooling medium and the third cooling medium to one another in a manner in which the first cooling medium, the second cooling medium and the third cooling medium are isolated from one another; the second heat exchanger is configured to thermally couple the second cooling medium to the third cooling medium through the bypass in a manner in which the second cooling medium and the third cooling medium are isolated from each another. <EOS>