The invention discloses a solar photovoltaic panel cooling device. The device comprises a solar photovoltaic 
cell panel which is obliquely arranged; a frame is installed at the bottom of the solar photovoltaic 
cell panel; a detachable heat dissipation device is installed at the top of the frame; a 
metal plate is arranged at the bottom of the solar photovoltaic 
cell panel; a cavity formed in an arch shape is formed in the 
metal plate; and a detachable 
metal shell is installed at the bottom of the frame. According to the solar photovoltaic panel cooling device of the present invention, the cavity is formed in the metal plate made of a 
copper material; a cooling liquid circulates in the cavity, so that the heat on the metal plate is quickly carried; and therefore, the heat of the solar photovoltaic 
cell panel is dissipated. Compared with a mode in which a heat dissipation 
cooling pipe mounted on the surface of a metal plate, the heat dissipation mode of the device of the invention has higher heat dissipation efficiency; the top of the solar photovoltaic 
cell panel is subjected to air blowing heat dissipation through the heat dissipation device installed on the frame, meanwhile, dust can be prevented from adhering to the surface of the solar photovoltaic 
cell panel; and therefore, the efficiency of converting 
solar energy into 
electric energy through the solar photovoltaic cell panel is improved.