The utility model relates to a bicycle balance device which is arranged at a bicycle frame to keep stabilization when the bicycle runs and solves the problem that the bicycle has poor stability when the bicycle is run slowly or paused. The bicycle balance device comprises balance wheels, balance arms, stop raise components, stop fall components and a brake disk. When the back brake of the bicycle is operated, the balance wheels are stressed close to the ground. When the bicycle runs normally, the balance wheels are raised. The utility model is an ideal bicycle balance device which is used in the bicycle.