The invention relates to a pull-parting device, in particular to a worn medical adhesive tape pull-parting device. For solving the technical problem, the worn medical adhesive tape pull-parting devicesimple in operation and making the stickiness of an adhesive tape not prone to reduction. According to the technical scheme, the worn medical adhesive tape pull-parting device comprises a columnar box body, a cover, a first bearing seat, a rotary shaft, a second bearing seat, a rotary rod and the like. The top of the columnar box body is provided with the cover, the cover is matched with the columnar box body, the middle of the bottom of the columnar box body is provided with the first bearing seat in an embedded way, and the rotary shat is connected in the first bearing seat and is providedwith a cavity. Under the effect of the first bearing seat, the rotary shaft can rotate with an adhesive tape so that a medical worker can better pull out the adhesive tape and pull the adhesive tape apart through a toothed blade, the operation is simple, and the stickiness of the adhesive tape is not reduced; the adhesive tape can be compressed through a compressing mechanism, the phenomenon is avoided that the adhesive tape rotates when the toothed blade pulls the adhesive tape apart, and accordingly the tooth blade can better pull the adhesive tape apart.