Abstract: The present disclosure relates to use of a compound in preparation of a medicament for prophylaxis and treatment of inflammatory tissue damage. The present disclosure provides use of a compound in preparation of a medicament for prophylaxis and treatment of tissue damage, and the compound has a structure represented by formula I. The compound having the structure represented by formula I provided by the present disclosure can inhibit transcriptional activity of interferon regulatory factor 1 (IRF1), have prophylactic and therapeutic effects on tissue damage, enhance cell proliferation ability after tissue cell injury, and repair injured tissues. The compound having the structure represented by formula I provided by the present disclosure has important significance and application value in the preparation of the medicament for prophylaxis and treatment of tissue damage, particularly in the preparation of a medicament for inflammatory injuries of skin tissues induced by radiation and/or oxidation.