The invention discloses a posture correction pen. A two-slope sliding block is arranged in a pen point cover, the front end face and the rear end face of the two-slope sliding block are both of a slope structure, a slope structure of the tail end of a refill rod is arranged at the front end face of the two-slope sliding block, and the rear end face of the two-slope sliding block presses the frontend face of a push rod; two spiral chutes are formed in the outer side wall of a dual spiral chute rotating block; the push rod is sleeved with the dual spiral chute rotating block in a penetrating mode; an upper holding block and a lower holding block penetrate through the side wall of the pen point cover to be connected with sliding blocks in the spiral chutes; at the same time, the upper holding block and the lower holding block are pressed oppositely to make the two sliding blocks move in the spiral chutes, then the dual spiral chute rotating block moves forwards, and accordingly the pushrod pushes a refill to extend out of the pen point cover through the two-slope sliding block. As users need to keep holding the holding blocks of a pen holder, a constraint effect is achieved for teenagers with poor self-discipline; and by means of a self-maintaining structure, a pen point cannot shift under action of external force in the writing process, the pen point is stable, and the writingquality is guaranteed.