In general, iodophor is generally valid for 3-5 days after opening, depending on the situation: if the cap is tightened after the iodophor is used, the validity period may be extended to about 5 days. If the patient or medical personnel do not put the cap on the iodophor in time after disinfecting the area with iodophor, it may cause the iodophor to expire within this period. Contamination of iodophor may occur if dirt is accidentally dripped into the iodophor or if it is poured into the iodophor. Iodophor is a kind of iodophor that expires after being contaminated even if it has just been opened for a while. It is recommended that patients apply iodophor for disinfection with effective protection of the iodophor, which can effectively extend the disinfection date of the iodophor.