The production method of eel glue is to cut open the eel, take out the eel bone, clean it, and lay it flat on the net to dry for a period of time. Dried eel glue should be moisture-proof and insect-proof. Put the dried eel glue into a carton and put it in a well-ventilated place. Dried eel gum will lose some nutrition and weight, and the weight of one catty of eel gum will be reduced by about 3-4 taels.