Sprinkling salt on the ulcer wound does not necessarily speed up the wound healing. There are several reasons for this: First, when salt is spread on the ulcer wound, the salt dissolves and the wound becomes hypertonic, causing a large amount of water to seep out and causing the wound to become too moist, which is not conducive to the growth of fresh granulation tissue. Second, foreign salt does not guarantee absolute sterility, which may bring outside bacteria into the ulcer wound, aggravating local infection and causing wound redness and pain. Clinically, although light saline has a certain role in inhibiting the growth of bacteria, but for ulcer wounds, you should use vital iodine, hydrogen peroxide, saline to disinfect the treatment, in order to completely remove the bacteria in the wound, the use of salt is not scientific and not standardized.