The study used solid-state fermentation technology with controlled temperature,koji,and low-salt sterilization to re-process squid wastes in order to reduce environmental pollution and use protein resources effectively.During the solid-state fermentation,protease activity,amino nitrogen content,total acid content,volatile basic nitrogen(TVB-N) content and so on were determined,to study the optimal fermentation process.The result shows that adding the amino nitrogen to 8g/100g raw material was the optimal fermentation process,and the TCA soluble nitrogen(TCA-N),total soluble nitrogen(TSN) were higher,while TVB-N content and malondialdehyde content(TBARS values) were lower.We also used ORIGIN7.5 software to calculate the experimental data and obtained the dynamics model of producing amino acid nitrogen.