Recyclable plastic cover

The utility model discloses a recyclable plastic cap which comprises a bottle cap and an anti-theft ring. The bottle cap comprises a circular top and a cylindrical skirt part which extends downwards from the circumference of the top; an internal thread is formed on the inner circumferential surface of the skirt part; the multiple abutting parts are arranged on the inner circumferential face of the anti-theft ring at intervals. The anti-theft structure is characterized in that a bottom edge of the skirt part and a top edge of the anti-theft ring are connected through a plurality of breakable bridging points arranged at intervals along the circumference and a non-breakable connecting part; the anti-theft ring is provided with a notch, and the notch comprises an opening and a boundary opposite to the opening; and the part, adjacent to the boundary, of the anti-theft ring is defined as a shearing part. When the bottle and the bottle cap are recycled, the shearing part is sheared off, the anti-theft ring and the b