There is no such thing as what disinfectant is best. Usual disinfectants include medical alcohol, iodophor, hydrogen peroxide, etc. Medical alcohol is a topical disinfectant usually used on hands and skin, iodophor can be used to disinfect wounds, and medical hydrogen peroxide removes necrotic tissues, pus and blood as well as blood clots. You can choose the right disinfectant according to your needs. 1. Medical alcohol: can be used for hand and skin disinfection, belongs to the external disinfectant, should not be rubbed on the mucous membrane surface, and should not be in the eyes. This disinfectant may have burning and irritation after use, can not be shared with other disinfectants, and can not be sprayed, should be placed in a cool, dry, away from open flames. 2. Povidone-iodine: It has broad-spectrum bactericidal effect and belongs to medium-effective disinfectant, which can be used to disinfect wounds and mucous membranes. No stimulation, no pigmentation, but some patients will produce allergic reactions, so when allergies occur, you need to stop using the drug in time and change other drugs to disinfect the treatment. 3. Hydrogen peroxide: Hydrogen peroxide is an oxidizing disinfectant, which can make the pathogenic bacteria undergo redox reaction and play the effect of sterilization. Rinsing with water may produce foam, which is conducive to the removal of necrotic tissue, pus and blood, as well as blood clots. Patients should choose the appropriate disinfectant according to their needs. If adverse reactions or side effects occur after using disinfectant, stop the medication and go to the hospital.