The invention discloses a formula of an antiseptic and antistaling agent complex containing butyl ferulate, which comprises 1-2 parts of butyl ferulate, 1-2 parts of silver carp fish scale collagen peptide, and 1-2 parts of disodium EDTA , 0.5-1 part of jasmine flower extract, 4-5 parts of pullulan. It also discloses the application of the antiseptic preservative composition formula in food processing, especially the application in salmon antiseptic preservation, which effectively solves the difficulties of easy corruption, taste change, discoloration and water loss of salmon, and after treatment The best salmon has bright color, clear texture, elastic muscles and firm meat for a long time. The application and transportation of the solid preservative developed by the invention are more convenient, the produced salmon has a long storage period and high safety, and meets market demands.