The invention discloses a display device of a mobile communication device and a use method thereof, the display device including a base, a drive space is arranged inside the base, the lower end wall of the driving space is fixedly provided with a driving motor, the upper end of the driving motor is dynamically connected with a driving shaft, the upper end of the drive shaft is fixedly connected with a fuselage through the upper end wall of the drive space, the fuselage is internally provided with a work space, the workspace is internally provided with a left-right symmetrical sliding guide bar, the upper and lower end faces of the sliding guide bar are fixedly connected with the upper and lower end walls of the workspace, the workspace is internally provided with a sliding platform, the sliding platform and the sliding guide rod are slidably matched and connected, the height adjustment of the equipment is realized through the combination of a linkage mechanism and a series of springs,the safety of the equipment is enhanced, the ball setting is adopted, the functional flexibility of the equipment is enhanced, and the stability of the movement of the equipment is enhanced.