The main symptom of zinc deficiency is anorexia. When zinc is deficient, taste bud function decreases, taste function decreases, appetite decreases, eating decreases, and digestive ability weakens; 2. Growth and development are backward. 3. Hair is sparse and yellow. 4. Easy to catch a cold. People with zinc deficiency have decreased immune function and are prone to various infectious diseases, including diarrhea; A cold, etc. Zinc supplement is a kind of food supplement. Eat more foods rich in zinc, such as fish, lean meat, animal liver, kidney, egg yolk and dairy products. Eat more aquatic shellfish. Such as oysters, meat, scallops, etc. Eat more hard-shell foods such as chestnuts, walnuts and peanuts. Zinc supplementation with traditional Chinese medicine can also play a very good role.