Uniform-temperature plate, preparation method of the uniform-temperature plate and server

The invention is suitable for the technical field of heat dissipation elements, and discloses a uniform-temperature plate, a preparation method of the uniform-temperature plate and a server, and the uniform-temperature plate comprises a uniform-temperature plate body, a cooling medium, at least one guide plate and two end covers; the uniform-temperature plate body comprises a substrate and at least two cooling fins, a through groove is formed in the substrate in a penetrating manner, the cooling fins are arranged on one side of the substrate in a protruding manner, and the substrate and the cooling fins are of an integrated structure formed by aluminum extrusion; the flow guide plate is arranged in the through groove and divides the through groove into at least two sub through grooves penetrating through the base plate, a plurality of through holes communicated with the two adjacent sub through grooves are formed in the flow guide plate in a penetrating mode, and a first capillary structure is formed on the s