In order to improve correction capability of one-dimensional trajectory correction projectile, a new one-dimensional trajectory correction device was proposed and designed. Taking spin-stabilized projectile as research platform, the 105 mm caliber grenade was fixed with resistance correction mechanism, Admas and Fluent were used to work out working process of the mechanism, feasibility of the mechanism design was verified. The results show that the resistance coefficient ratio can reach about 2. 2 between before and after the mechanism works. It performs well in synchronization, reliably and speed, satisfying one-dimensional trajectory correction ability. The result is helpful for further design and practical application of one-dimensional trajectory correction mechanism.