The invention provides a method for processing a fish bone snack food. The method comprises the following steps: (a) pretreating fish bones, namely firstly removing fish scraps on fish bones and washing the fish bones in clear water, then, boiling the fish bones in a pot for 10-20 minutes to cure the fish bones and remove grease on the surfaces of the fish bones, picking out the fish bones, and performing drying for later use; (b) performing enzymolysis, namely performing soaking and enzymolysis on the fish bones in an endopeptidase aqueous solution at 40-60 DEG C for 2-4 hours; and (c) performing soaking with a seasoning spice liquid, namely soaking the enzymolytic fish bones in the seasoning spice liquid at the temperature of 25-35 DEG C for 0.5-2 hours.