The present disclosure provides a flexible device for burr removing, which is composed of a frame (1), lower flanges (2), guide posts (3), thrust cylinders (4), guide sleeves (5), thrust shafts (6), sleeves (7), a movable plate (8), upper flanges (9), a dust guard (10), cylinder housings (11) and the like. The flexible device for burr removing in use can meet the requirement for brushing burrs on wheels having two different sizes in one burr brusher, has the characteristics of ideal effect, high efficiency, safety and reliability in work and high degree of automation, and is particularly suitable for batch production on production lines.