Fish protein fermentation liquor

The invention relates to a fish protein fermentation liquor, belongs to the field of biological technical processing, and particularly belongs to the field of fertilizer additives. The fish protein fermentation liquor comprises organic matters, amino acid, chitosan, calcium, magnesium, zinc, manganese, ferrum, boron, molybdenum and the balance being water. The fish protein fermentation liquor provided by the invention is a purely-natural liquid organic fertilizer, is high in contents of nutritional ingredients, rich in organic matters such as polypeptide and amino acid, rich in trace elements, free of pollution when being used, wide in applicability and capable of promoting root systems to be developed and stalks to be strong and enhancing the disease resistance; by using the fish protein fermentation liquor, the yield increasing effect of crops is remarkable, and especially the yield increasing effect of fruits and vegetables is remarkable.