If a child has growth retardation, it is better to intervene early after birth because the systems are still growing and developing at this time, and early intervention for abnormalities is more effective, so early diagnosis and treatment are needed. In the case of growth retardation, the first step is to determine the cause of the retardation through medical history, physical examination and auxiliary examination, and to determine the principle of treatment. If the delay is due to malnutrition, we should provide a balanced diet and cultivate good eating habits; if the delay is caused by systemic diseases, we should actively treat the primary disease; if the delay is familial, we can improve the growth and development by injecting growth hormone; if the delay is due to congenital genetic metabolic diseases, such as hypothyroidism, we also need to provide targeted treatment and supplement thyroid hormone. Thyroxine, etc. If the child has delayed language development, he or she should be trained early to imitate adult speech sounds, encourage the child to speak and learn to express his or her requirements in words. To stimulate the child to speak more, such as let the child say more mommy and daddy, etc. To let the child more social contact with people to exercise the child’s courage to cultivate a sound personality, to improve the child’s social adaptability. In conclusion, there are various manifestations of growth retardation, so it is important to clarify the specific types and causes for targeted intervention and intensive treatment to improve the growth retardation.