The invention discloses an electromechanical equipment heat dissipation apparatus capable of quickly replacing a heat dissipation fan. The electromechanical equipment heat dissipation apparatus comprises an electromechanical box; an accommodating cavity is formed below the electromechanical box; a motor is fixedly arranged on the inner side wall of the accommodating cavity; the output shaft of themotor is fixedly connected with a lead screw; the outer surface of the lead screw is in threaded connection with a sliding block; multiple clamping bases are fixed on the top surface of the sliding block; the clamping bases are distributed on the top surface of the sliding block in an annular shape, and the number of the clamping bases is three; a heat dissipation fan framework is clamped in theclamping bases; and the heat dissipation fan is fixedly connected in the heat dissipation fan framework. According to the electromechanical equipment, clamping columns are separated from circular clamping grooves, the heat dissipation fan framework is rotated to enable clamping blocks and connecting lugs to be rotated outwards from L-shaped clamping grooves, and then the heat dissipation apparatuscan be replaced; and after replacement is completed, the clamping columns are lifted upwards, and the heat dissipation fan framework is rotated backwardly, and the clamping blocks and the connectinglugs are rotated into the L-shaped clamping grooves, and then a handle is loosened, and the under the elastic effect of springs, the clamping columns are automatically inserted in the corresponding circular grooves.