The invention discloses a disposable negative pressure suction peeling sheath. The disposable negative pressure suction peeling sheath comprises a peelable sheath body which is of a linear-shaped structure, a Y-shaped connector and a negative pressure absorbing system; the lower end of the Y-shaped connector is connected with the upper end of the peelable sheath body; one side of the upper end of the Y-shaped connector is connected with the negative pressure absorbing system. By means of the disposable negative pressure suction peeling sheath, circulation of flushing water in percutaneous nephrolithotomy is facilitated, clearing of calculus granules is facilitated, bacterial toxins and flushing water absorption can be reduced, lethal complications such as water intoxication and septic stock are avoided, the operation time is reduced, and the medical cost is reduced.