Sound box with good heat dissipation function

The invention discloses a sound box with a good heat dissipation function. The sound box comprises a sound box body. Support columns are fixed at four corners of the inner bottom of the sound box body. Springs sleeve the support columns. Upper ends of the support columns penetrate through a support plate and extend to the upper part of the support plate. The support columns on the support plate are in threaded connection with locking nuts. A hollowed cylinder is fixed at the bottom of a hollow cover body. The lower end of the hollow cylinder extends to the upper part of the support plate. Cooling fins are installed on the inner wall of the hollowed cylinder. A heat dissipation opening part is arranged in the top of the sound box body. A dust-proof net is arranged on the heat dissipation opening part and is fixed on the top of the sound box body through a screw. Fixed rods are symmetrically fixed on two sides of the inner top of the sound box body. A driving motor is installed in the middle part of each fixed