Bird’s nest and fish gelatin are both very nutritious foods, and both have the effect of nourishing Yin and blood from Chinese medicine. The difference between the two is that bird’s nest focuses on the upper and middle jiao, and is mainly used to treat patients with dry cough without phlegm and lung yin deficiency, while it also has some therapeutic effect on patients with spleen and stomach weakness in the middle jiao. Fishnest focuses on the middle and lower jiao, and is useful for patients with liver and kidney deficiencies, such as soreness of the waist and knees, weakness, dry mouth and tongue, dizziness, and weakness of the spleen and stomach in the middle jiao, with poor appetite. In terms of modern medicine, bird’s nest and fish gelatin are rich in collagen, and in addition to collagen, they are also rich in vitamins and trace elements of zinc and selenium, which can be considered as very good food for human nutrition.