Pressure maintaining box for folding screen mobile equipment

The utility model provides a pressure maintaining box for a folding screen mobile device. The pressure maintaining box comprises an upper box body, a lower box body and a pressure maintaining assembly. The upper box body and the lower box body are connected and define a jig pressure maintaining area, and a first containing area, a rotating shaft cover containing area and a second containing area are sequentially arranged on the lower box body in the length direction of a jig. The pressure maintaining assembly is located between the upper box body and the lower box body. The pressure maintaining assembly comprises a pressing plate used for being pressed in the middle of the jig, and the pressing plate is installed on the lower box body in the width direction of the jig and corresponds to the rotating shaft cover containing area. The upper box body abuts against the pressing plate. According to the pressure maintaining box of the folding screen mobile equipment, the pressing plate is tightly attached to the fol