One-month baby diarrhea needs symptomatic treatment, may be related to abdominal cold, indigestion and other factors, the treatment is mainly based on medication, dietary regimen. 1. Abdominal cold: January baby gastrointestinal function is not yet well developed, when the abdomen is cold, there will be a high number of stools, mostly yellow or greenish diluted stools, the general state of the baby is good, no special treatment, pay attention to warmth. 2. indigestion: when improper feeding leads to gastrointestinal dysfunction, abnormal stools, you can supplement the appropriate probiotics such as bacillus subtilis bifidus and other medicines to regulate the intestinal flora, stools are dilute watery, you can give montelukast to stop diarrhea. One-month-old babies have more causes of diarrhea (e.g. lactose intolerance, etc.), and if it persists without relief, go to the hospital in time to find out the cause of the disease and treat it under the guidance of the doctor. The above medications should be taken under the guidance of a doctor and should not be used on their own.