Sinus bedsore belongs to stage ⅳ bedsore, that is, severe bedsore. How big the wound is now, the size of the wound has a great relationship with the difficulty of treatment. The treatment of sinus bedsore first needs cleaning and checking the depth and width of sinus. In this case, the commonly used technology with good effect and low cost: VSD negative pressure closed drainage technology is generally adopted. This technology is a common method to remove rot, sterilize and promote the growth of raw meat buds. The daily care of bedsore patients is very important, so we must pay attention to hygiene and not oppress the affected area.