The invention discloses a diode seat convenient for heat dissipation. The diode seat comprises a base body, wherein an upper shell is fixed on the upper surface of the base body, a plurality of vent holes are formed in the surfaces of two sides of the upper shell, a diode is clamped in a groove formed in the top end of the upper shell, a conductor pipe connected to the tail end of the diode penetrates through the whole base body, and heat dissipation pieces are arranged on the left and right sides in the groove; and a first metal transverse rod is arranged in the first through hole formed in the surface of the right end of the upper shell, a first metal vertical rod is fixedly connected to the right end of the first metal transverse rod, a second metal transverse rod is arranged in a second through hole formed in the surface of the left side of the upper shell. By arranging the vent holes, the heat dissipation pieces, the first through hole, the first metal transverse rod, the first metal vertical rod, the second through hole, the second metal transverse rod, a second metal vertical rod, a first fastening bolt and a second fastening bolt, the problems that the heat dissipation function is poor, the fixation manner is not tight enough, and the diode is easily shaken to result in economic loss are solved.