Trace elements include calcium, iron, zinc, magnesium, copper, etc. First of all, it should be clarified whether there is a deficiency of the above elements, if there is indeed a deficiency, it should be supplemented according to the test results under the guidance of the doctor, and it can be fed with food rich in the corresponding trace elements: 1. Calcium deficiency: Eat calcium-rich foods, such as dairy products, shrimp, sesame and so on. More sunshine, if necessary, supplemental vitamin D, in order to promote the absorption of calcium. 2. Iron deficiency: you can eat pig liver, pig blood, spinach, beef, fungus and other iron-rich foods. 3. Zinc deficiency: Encourage eating zinc-rich animal foods, such as oysters, liver, fish, lean meat, poultry eggs and so on. 4. Magnesium deficiency: can be supplemented by eating foods rich in magnesium such as purple cabbage, peanuts, soybeans and beef. 5. Copper deficiency: Encourage into copper-rich foods, such as pig liver, soybeans, nuts and so on. As long as attention is paid to a reasonable diet, not picky, not partiality, the general micronutrients are not deficient.