The baby’s gastrointestinal problems recommend timely to the hospital to identify the cause of the disease, follow the doctor’s advice to choose whether to take vitamin D. Baby gastrointestinal problems recommend timely access to hospitals to identify the cause of the disease, in accordance with the doctor’s advice to choose whether to take vitamin D, to avoid the gastrointestinal stimulation aggravated gastrointestinal burden triggered by the adverse symptoms. At the same time, should pay attention to diet, drugs, emotions and other factors. 1. Disease: baby gastrointestinal problems, should be timely to the hospital through the examination to rule out gastrointestinal tract organic disease, if found organic disease, to timely targeted treatment. 2. Diet: the baby’s teeth are not fully developed, may not have chewed the food when eating and swallowed, not chewed food into the stomach will increase the burden on the stomach and intestines, resulting in gastrointestinal problems. 3. Medications: medications should be used in accordance with medical advice, the wrong use of drugs may lead to the baby’s gastrointestinal problems. 4. Emotions: when the baby is in a bad mood or in a state of agitation, depression, nervousness and other psychological conditions, it will affect the function of the gastric mucosa, and may cause gastrointestinal problems. If the baby appears uncomfortable symptoms, should take the baby to the hospital in time, so as not to delay the condition or cause adverse reactions.