Vertical cotton opener

The invention discloses a vertical cotton opener which comprises a feeding opening, a discharging opening, a cotton storage box and a beating device. The feeding opening and the discharging opening face upwards in parallel, the discharging opening is vertically communicated with the beating device through a vertical channel at the lower portion the discharging opening, a blowing device which supplies air upwards is installed below the vertical channel, the feeding opening and the cotton storage box are separated from the discharging opening and the vertical channel through a vertical separation board, and the beating device is located below the vertical separation board. The vertical cotton opener is compact in structure and integrally in a cube shape; due to the fact that the feeding opening and the discharging opening face upwards in parallel, connection and arrangement in a production line are convenient; due to the fact that the feeding part and the discharging part are separated, interference in air flow does not exist.