Infants who do not have bowel movements but fart, accompanied by decreased appetite, can be treated with observation and follow-up, and if necessary, can be given cecrops to treat the anus. Older babies can be treated with dietary adjustments or probiotic supplementation. Baby light fart not poop, may be due to the lack of water in the body leading to dry stool or because of food metabolites less, can not be very good, to promote gastrointestinal peristalsis caused by not defecation. Thus can not be successfully discharged, such as the age of the baby, at this time should be sufficient to supplement the liquid, while eating more food containing dietary fiber, is conducive to laxative. If necessary, can supplement probiotics (such as bacillus subtilis bacillus granules) to relieve constipation symptoms. If parents find that the baby light fart not defecation, through the massage of the baby’s abdomen to promote gastrointestinal peristalsis, to a certain extent, can promote defecation. If the baby has not been defecated for several days, we need to be vigilant about the possibility of constipation, can be timely pediatric outpatient clinic consultation, in accordance with the doctor’s instructions to be targeted treatment.