High concentration of salt water has some sterilization effect, but the effect is limited. Salt generally refers to table salt, table salt is a food seasoning in life, high concentration of salt water, can lead to bacterial water loss and death, which can play a certain bactericidal effect. If we deal with wounds in the hospital, the doctor may use saline, which is 0.9% sodium chloride solution, mainly used to clean the wound, but trauma is not recommended to use their own saline rinse, because it is not possible to grasp the concentration of saline, but on the contrary may play a bad role. Although the high concentration of saline has a certain bactericidal effect, but can not kill the virus, is not a substitute for disinfectant.