The invention discloses a pressure identification pressing device for a solar wing spreading frame lifting mechanism. The pressure identification pressing device is connected and fixed to the surface of a first arm through a bolt and comprises an adjusting screw rod, an end cover, a gland nut and the like. The adjusting screw rod is perpendicularly arranged on the end cover. The end cover is connected and fixed to the side wall of a shell. The adjusting screw rod penetrates the end cover to be located on the central axis of the shell. The other end of the shell is fixed to the first arm to form a sealed space. The adjusting screw rod is axially sleeved with the gland nut. The gland nut is connected with a pressing block through a spring. A pressing wheel is welded to the pressing block or connected to the pressing block in a threaded manner. Through rotation of the adjusting screw rod, the gland nut is driven to move in the axial direction of the adjusting screw rod and transmits force to the pressing wheel through the spring, so that the second arm is tightly pressed to the first arm, and therefore the interval between the first arm and the second arm is eliminated.