LED display screen with small spacing

The invention discloses an LED display screen with small spacing. The display screen comprises an LED lamp group, a box body and fixing screws, the LED lamp group is fixedly connected with the front end of the box body, the LED lamp group is in clearance fit with the box body, the fixing screws are arranged on the box body, the box body and the fixing screws are movably connected, the LED lamp group comprises a PCB board and a plurality of LED illumination tubes arranged on the front face of the PCB board, the LED illumination tubes are distributed in a rectangular array, the back face of thePCB board is an integrated circuit welding surface, a thermomagnetic heat dissipating device is added to the integrated circuit welding surface, and heat dissipating through holes are formed in the side face of the box body; the box body comprises a housing, fastening screws, a bottom housing, heat dissipating holes, wire connecting terminals and indication lamps, the bottom housing is arranged inthe middle of the housing