Babies who do not sleep much during the day for 20 days may be caused by too much interaction with the family during the day, but also by insecurity, hunger, indigestion, and micronutrient deficiencies such as vitamin D. Parents need to pay timely attention to the baby’s mental and physical condition and seek medical treatment if necessary. Common causes and treatment measures are as follows: 1. Too much interaction with the family during the day: When the baby interacts too much with the family during the day and is emotionally excited, it is easy to have very little sleep during the day after forming a habit. Families should pay attention to the fact that the baby will be placed in a quiet environment during the day to develop sleep habits; 2, lack of security: the baby in the womb mainly to maintain the position of curled limbs, soon after birth, the baby may lack a sense of security because of the stretching of limbs. Parents can properly wrap the baby, but over time, this situation will appear to improve; 3, hunger: If the amount of food is not enough, it may cause the baby’s hunger, resulting in the inability to sleep. Parents need to pay attention to the baby’s milk eating condition in time and feed milk as needed. If the amount of milk is not enough, formula can be added appropriately; 4, indigestion: the baby’s gastrointestinal function is not yet perfect, if the milk powder is too cold or too full for a long time, it can affect the digestive function, resulting in gastrointestinal tract dysfunction or indigestion, which can cause abdominal distension, colic and other symptoms, resulting in the inability to sleep. Parents can pay attention to the baby’s stool situation, if abnormalities should be promptly consulted, under the guidance of professional doctors, the use of bifidobacteria and other probiotics to adjust the intestinal flora. Parents can also massage, hot compress baby’s abdomen to relieve the symptoms of bloating; 5, micronutrient deficiency: mainly for lack of vitamin D, should follow medical advice and timely supplementation of calcium and vitamin D and other preparations, such as cod liver oil. Daily life also need to take the baby out more outdoor activities to increase the time of exposure to the sun to promote the absorption of trace elements. In addition, parents also need to keep the room temperature appropriate, and avoid too much clothing, cover too thick, to prevent the baby sweating too much, or cause eczema, affecting the comfort, and affect the quality of sleep.