The use of salt water sitz bath can not be randomly prepared salt, if a certain concentration is not reached, it can not play a bactericidal effect, if the concentration is too large, there may be discomfort, therefore, the salt water sitz bath need to be prepared according to the proportion. Studies have shown that when the concentration of salt water is 1.5%, the healing effect is the best, the wound healing is the fastest, and the patient does not feel uncomfortable. If the concentration is lower than this, especially lower than the concentration of saline, the killing effect of germs is not good. If the concentration is higher than this, the wound will be dry and cracked and other uncomfortable phenomena, so that the skin and mucous membrane can not be effectively convergence, but affect the therapeutic effect. Salt water sitz bath can not only remove bacteria near the anus, but also make the skin and the diseased part of the capillary expansion, promote blood circulation and lymphocyte circulation, etc., to enhance the resistance of tissues and organs. For more information about salt water sitz bath, please consult your doctor.