Red-mouthed fish gum has the protein and a variety of trace elements needed to supplement the body, the body has the effect of nourishing Yin and Yang, can often eat. It is also good for stopping bleeding from trauma, recovering the body of pregnant women, and increasing milk; for weak and anemic, post-operative deficiency, it is good for nourishing qi and blood, helping to dispel evil; it can also treat weakness of the waist and knees, night sweating and spermatorrhea, and kidney deficiency. There are 2 factors that determine the goodness of fish glue, which is new and old and size. Long time big red-billed fish is better.