The paper aimed to isolate epiphytic lactic acid bacteria from shrimp waste and to ferment shrimp waste with the isolated bacteria to recover protein and chitin.A strain of bacteria,which was easy to grow and produced much lactic acid in shrimp waste was isolated and identified as Lactobacillus acidophilus,and the bacteria was named as SW01.The fermentation condition was researched and determined as follows: using fresh shrimp waste as raw material,adding 15% glucose and 50% water,adjusting the initial pH to 7.0,fermenting at 40℃ for 72 h.Under these conditions,the lowest pH reached 3.50,94.8% of the protein in shrimp waste was removed,and only 0.77% mineral remain in the residue.The purity of the residue reached the standard of food grade chitin.By this method,protein and chitin in shrimp waste were simultaneously recovered and scarcely any waste water and waste residue were discharged.