A fluid cooled lamp includes: a heat conductive pipe has multiple heat conductive surfaces and a hollow channel; multiple illumination modules arranged at each heat conductive surface; a junction assembly for inlet and outlet of fluid including an inlet joint and an outlet joint, the inlet joint and the outlet joint are respectively communicated with both ends of the hollow channel; a flow guiding inner tube communicated with inlet joint and located in the hollow channel, multiple spray holes are disposed in the flow guiding inner tube, the fluid is sprayed from each spray hole and impacts an inner wall of the heat conductive pipe to remove heat.