0~3 months of infants crying may be due to hunger or sleepiness, urination and defecation and other physiological stimuli, may also be the emergence of indigestion, the need to feed, change diapers in a timely manner, appropriate massage of the abdomen, medication and other methods of soothing, such as does not alleviate the situation, it is recommended that timely access to medical care. 1. Hungry or sleepy: when the baby is hungry or sleepy, it will cry in the form of wanting to drink milk, at this time should be fed in time, if there is the case of wanting to sleep, can be appropriate to put to sleep. 2. Urination and defecation stimulation: infants want to urinate and defecate, will also be expressed in the form of crying, at this time you need to change diapers in a timely manner, to keep the local skin clean, to prevent discomfort. 3. Indigestion: Babies who do not eat properly may suffer from indigestion, which is manifested by abdominal pain and bloating, which leads to crying. At this time, we need to carry out local massage to promote the baby’s gastrointestinal peristalsis, so as to reduce the discomfort, if necessary, can follow the doctor’s advice to take probiotics and other relief. If the infant’s crying continues to be unrelieved, there may be other reasons, it is recommended to go to the hospital in a timely manner, under the guidance of the doctor to carry out standardized treatment, to promote the relief of discomfort.