A soft extraction paper slitting device comprises a machine frame, a band-sawing machine, an intermittence paper feeding mechanism, a main driving mechanism and a control device, wherein the intermittence paper feeding mechanism is arranged on the machine frame in the longitudinal direction in a horizontal sliding mode, the main driving mechanism is arranged on the machine frame, is connected with the intermittence paper feeding mechanism and makes horizontal and reciprocating motion in the longitudinal direction, the control device is respectively connected with the intermittence paper feeding mechanism, the band-sawing machine and the main driving mechanism, the intermittence paper feeding mechanism comprises a sliding seat which is arranged on the machine frame in the longitudinal direction in a horizontal sliding mode, a first belt conveying mechanism which is transversely and horizontally arranged on the sliding seat and is used for conveying soft extraction paper to the band-sawing machine, a second belt conveying mechanism which is arranged on the sliding seat, is located above the first belt conveying mechanism and is used for compressing the soft extraction paper before the soft extraction paper is cut, a third belt conveying mechanism which is arranged on the sliding seat and is used for conveying the cut soft extraction paper, and a servo motor which drives the first belt conveying mechanism, the second belt conveying mechanism and the third belt conveying mechanism to work through a transmission mechanism. The soft extraction paper slitting device has the advantages of being high in cutting efficiency, good in quality and the like.