The baby's growth and development is slow, which may be due to the lack of vitamins and trace elements. Need to go to the hospital for trace element examination. Most of them are caused by zinc deficiency or calcium and iron deficiency. Choose certain trace elements to supplement according to the inspection results, and eat foods rich in iron, zinc and calcium, such as animal liver, lean meat, whole grains, fresh fruits and vegetables, etc. And don't be partial eclipse.