Finger cut by the knife, hydrogen peroxide and iodophor do not exist which disinfection effect is good, each has its own characteristics. 1. hydrogen peroxide: generic name is hydrogen peroxide, belongs to the disinfection and antiseptic drugs, suitable for purulent otitis externa, otitis media, Vincent stomatitis, tooth abscess leakage, tonsillitis, as well as cleaning wounds. 2. Povidone-iodine: generic name povidone-iodine solution, also belongs to the disinfectant antiseptic, clinically used for septic dermatitis, fungal skin infections, small area of mild burns, and small area of skin, mucous membrane wounds disinfection. The hand was cut by the knife, choose hydrogen peroxide and povidone iodine solution for disinfection are available, there is no good or bad. Finger cut by knife, you need to go to the hospital in time to clean the wound, according to the depth of the wound, to decide whether it needs to be sutured, whether it needs to be injected with tetanus and so on.