Povidone-iodine usually does not need to be washed off. Povidone-iodine is a commonly used disinfectant in clinical practice, which can disinfect and sterilize wounds, helping to prevent them from becoming infected, and can be used to apply povidone-iodine as prescribed by a doctor if there is a wound on the skin. The use of povidone-iodine disinfection usually does not need to be washed, and will not affect the recovery of the wound, and wash off the povidone-iodine may also affect the effect of the drug. After using povidone-iodine, you should pay attention to the skin reaction, if there are any uncomfortable symptoms, such as the occurrence of allergies, you have to stop using it, so as not to lead to the worsening of the symptoms. If there is a wound, usually must do a good job of care, to prevent infection, diet also needs to be light, avoid eating spicy and stimulating food, if there is any abnormality, go to the regular hospital in time.