Infants who do not sleep soundly and cry may be related to the environment, overfeeding or starvation, lack of trace elements and other factors, which can be divided into physiological and pathological causes. Common causes and treatments: I. Physiological causes 1. Environment: If the surrounding sound is too noisy, the light is too bright, the room temperature is too high or too low, or the clothes are too tight, it may affect the baby’s sleep. You can close the curtains and lights when the baby sleeps to avoid a noisy environment, thus providing a good sleep environment; 2. Diet: too much food before the baby sleeps can lead to the accumulation of food in the baby’s stomach, causing stomach discomfort and even reflux of stomach contents, which leads to crying in bed. The baby can be picked up and gently massage the stomach, can promote the digestion of food. In addition, if not enough food, hunger can also lead to infants feel uncomfortable, thus crying, you can properly adjust the feeding method; 3, comfort: not changing diapers in a timely manner, diapers are too tight may make infants feel uncomfortable, causing infants to appear unstable sleep. Second, pathological factors 1, lack of trace elements: usually caused by a lack of calcium and vitamin D. Calcium deficiency can lead to incomplete development of the infant’s nervous system, and low blood calcium will increase the excitability of the infant. Parents can take their infants to the hospital for trace element testing, and under the guidance of the doctor take calcium and vitamin D orally, such as calcium gluconate or vitamin D3. Pay attention to the sun and eat foods rich in calcium, such as milk, egg yolk, etc.; 2. Disease factors: If the infant suffers from rhinitis, nasal polyps and other diseases, it will affect the infant’s breathing during sleep, resulting in restless sleep and crying. It also includes other diseases that cause infants to have uncomfortable symptoms, such as fever, intestinal cramps, etc. It is necessary to seek timely medical attention to improve the relevant examination, clear diagnosis and symptomatic treatment.