The invention discloses a concave-convex face radiating plate. Multiple first-level U-shaped grooves are formed in the surface of the radiating plate. Multiple protruding bars are arranged between the first-level U-shaped grooves. The sections, perpendicular to the axial direction of the radiating plate, of the protruding bars are in a rectangular shape and an inverted U shape, and the protruding bars with the rectangular sections and the protruding bars with the inverted-U-shaped sections are arranged alternately. Due to the fact that the U-shaped grooves are arranged, a low-temperature medium is closer to the bottom faces of the grooves, the effective heat exchange area of the radiating plate is enlarged, the installation stability of a radiator can be improved due to the arrangement of the buckling grooves, and the phenomenon that the radiating efficiency is affected due to relative displacement generated by vibration of a high-temperature object is avoided.