6 months baby 4 days did not poop, may be physiological factors, but also can not be ruled out is caused by certain diseases, such as infant constipation, intestinal obstruction, etc., mainly through the general treatment, medication, surgical treatment, etc. to help the baby defecation. 1. Physiological factors: 6 months baby 4 days without poop, may be due to the baby’s absorption of breast milk is better resulting in a normal phenomenon, if the baby’s appetite, mental state, etc. are not abnormal, generally no need to worry about, you can increase the baby’s water intake, and appropriate massage of the baby’s abdomen. 2. Infant constipation: 6 months baby 4 days did not poop, if accompanied by difficulty in defecation, crying, loss of appetite, etc., then you can use Keseru Na anus, to promote the discharge of feces. And the use of bifidobacteria triple live bacteria and other drugs to regulate intestinal flora imbalance, improve the symptoms of constipation in babies. 3. Intestinal obstruction: If a 6-month-old baby has not had a bowel movement for 4 days, and if it is accompanied by abdominal pain, vomiting, abdominal distension and other symptoms, then consider intestinal obstruction. Continuous gastrointestinal decompression is needed, and intravenous fluids are administered to correct acid-base balance and electrolyte disorders according to vomiting and dehydration. Surgical treatment such as short-circuit surgery, bowel resection and intestinal anastomosis are performed if necessary. 6 months baby 4 days did not poop, exclude physiological factors, parents should pay attention to the baby to the hospital in a timely manner, to identify the cause of the disease, and the appropriate treatment. The above medications should be used in accordance with medical advice.