To provide a cell repair agent capable of repairing cells damaged by the oxidizing power of acidic electrolyzed water or the like, and, a disinfection system capable of safely and efficiently accelerating the sterilization and cure of infected skin or intraoral wounds. The cell repair agent contains at least one type of a polyphenol represented by the following general formula (1), a polymer thereof, and a pharmaceutically acceptable salt thereof R 2 and R 3 are preferably hydrogen atoms, and R 1 is preferably a hydrogen atom or a hydroxyl group.
