The disposable limb surgical drape includes: main drape, reinforcement layer, and soft elastic membrane. The main sheet is composed of polypropylene SMS non-woven fabric with anti-alcohol, anti-blood penetration, and antistatic functions; The reinforcing layer is located in the center of the main sheet and is composed of the outer spunbonded polypropylene non-woven fabric (SPP) and the inner polyethylene (PE) film to increase the liquid absorption of the outer layer and the impermeability of the inner layer; The soft elastic membrane is located in the center of the reinforcing layer, which makes the hole of the surgical drape closely fit with the patient's limbs, enhances the barrier performance and protection performance, saves the procedure of tying tourniquet, simplifies the operation preparation, and saves raw materials. The reinforcing layer is bonded with the main sheet by hot melt adhesive, and the soft elastic membrane is bonded with the reinforcing layer, so as to achieve the purpose of improving the performance of the limb surgery sheet and making it more convenient for clinical application.