The first 100 days of life is the adaptation stage when the newborn baby leaves the mother’s body and changes from living in the womb to living outside the womb. During this period, the physiological functions of the tissues and organs of the newborn baby are very imperfect, with low resistance and poor adaptability, which requires careful parental care. This article summarizes the real and online questions that people ask in three main areas, namely feeding, sleep, and skin care. Feeding It is best to breastfeed. Breastfeeding is nutritious, disease prevention, easy to digest and absorb, convenient, economical, not easy to contaminate, can increase the feelings of mother and baby, and is conducive to the mother’s smooth recovery after childbirth. In the first few days after birth, the mother’s milk is not enough, so the newborn should suckle repeatedly, feed on demand, and feed at any time with hunger, without any time limit. Each feeding time should be 15-20 minutes, sucking up one breast and then the other. Since the newborn’s stomach is in a horizontal position, after feeding, she should be held upright and patted on the back so that the swallowed air can be expelled to avoid overflow. The mother should wash her hands and nipples before each feeding. Sleep Sleep quality is the key to your baby’s growth and development, so what should you pay attention to when your baby sleeps? The pillow height is a matter of concern. The newborn’s spine is straight, lying flat, the back and the back of the head in the same plane, will not cause muscle tightness state and lead to pillowing. Therefore, newborns do not need a pillow. It is not advisable to shake. The baby’s brain is not yet developed, rapid and substantial shaking may make the baby’s brain tissue surface small blood vessels rupture, resulting in adverse consequences. Therefore, it is best to train the baby’s ability to fall asleep on their own and avoid holding or patting them to sleep. Swimming and massage touch are good for training baby’s ability to fall asleep on their own. It is not advisable to hold a pacifier. Some children have to sleep with their mother’s nipple or pacifier in order to fall asleep, which is prone to poor breathing and even suffocation, and can easily cause gastrointestinal disorders in children. At the same time, it may also affect the normal development of the child’s dental bed and the cleanliness of the oral cavity. Adjust the sleep time as soon as possible. Many infants have a “black and white” sleep schedule, which is not conducive to parental rest and the growth of the child. When an infant sleeps too much during the day, parents can consciously wake the child up and play games with the child to adjust the time to establish a normal sleep schedule as soon as possible. Turn off the lights in a timely manner. It is best not to turn on the lights at bedtime, too much light will affect sleep, if you really want to light up, it is best to light a soft light, dark night light. Studies have shown that infants sleeping with lights on overnight can lead to poor sleep and shorter sleep times, which in turn slows development and increases the incidence of myopia. Skin care Many parents say that babies’ skin is difficult to care for. Yes, the newborn’s skin is very delicate, although it is a protective barrier against external infections, but vulnerable to sweat, urine and stool, milk and airborne dust stimulation, and erosion, therefore, in addition to frequent bathing of newborns to keep the skin clean and reduce the chances of infection. Also pay attention to the following points: avoid using ointment at will. The newborn’s skin is thin, rich in blood vessels, and has a strong absorption and permeability. Therefore, do not use ointments for newborns at will, especially those containing hormones, and when they must be used, they should be discontinued when the condition is relieved, and never used for a long time. Newborn skin sweat glands, sebaceous glands secretion function is strong, sebum easy to overflow, mostly in the top of the head (fontanel), eyebrows, nose, external ear canal and the root behind the ear, such as not often cleaned, will be with the air dust, skin debris and the formation of a thick layer of scab. Therefore, when cleaning should first use vegetable oil rubbed on top of the scab, soak softened, and then clear and clean with water, never use your hands to tear off the scab, so as not to damage the skin. The skin care of the perineum. Neonatal buttock redness is the most common problem in newborn care. Newborns urinate and defecate a lot, their buttocks are soaked in urine for a long time, they do not use water to rinse their buttocks after defecation, and their diapers have poor breathability, all of which can cause and aggravate buttock redness. Hip redness can cause local skin breakage and bacterial invasion under the skin, causing perianal abscesses and difficulty in defecation. The way to prevent buttock redness is to rinse the baby’s buttocks with water in a timely manner after urinating and defecating, wipe them with soft cotton cloth or wet wipes, use diapers with good breathability, and not lay plastic cloth; and change diapers in a timely manner. Once hip redness is found, use tea oil or other vegetable oil to coat your baby’s buttocks after each rinse, so that it is not easily soaked with urine. Never use baby powder.