The invention discloses a pure electric vehicle radiator installation and pipe support device, which comprises a water tank upper beam, a radiator assembly, a cooling pipe and a radiator installation bracket, wherein the radiator assembly is arranged at the bottom of the water tank upper beam; the cooling pipe is arranged at one side of the radiator assembly; the radiator assembly is arranged on the water tank upper beam through the radiator installation bracket; the radiator installation bracket comprises a fixed bracket, a pipe support frame, a radiator hanger, a welding spot and a screw hole; the radiator installation bracket is connected with the radiator assembly through the radiator hanger; and the radiator installation bracket is connected with the cooling pipe through the pipe support frame. The installation bracket does not interfere with other components, a gap is reasonable and the fixed fit with a radiator is tight. Through the installation bracket, the radiator is fixed on a body-in-white; and when the whole vehicle moves, an antifreeze liquid can flow through the radiator to be cooled, so that normal operation of the whole power system is ensured.