The invention discloses a sports bra capable of adjusting shock strength woven with seamless knitting machine Santoni SM8-TOP2S; the sports bra comprises a shockproof strap, cups, side wings, shoulder straps, a back and a lower cuff; the bra is split from middle front, the shockproof is vertically adjustable, and the lower breast and cup size of the bra can be adjusted. The shockproof herein allows a sportsman to adjust the lower breast tightness and cup size of the bra according to sports strength and comfort needs to adapt to activities of different strength, and good shock buffering effect is guaranteed for the sports bra; seamless knitting technology is also combined herein, multiple special-design weave structures are applied to the sports bra, and the comfort, fitness and functionality of the bra are enhanced.