6 months old baby pull dark green stool with mucus, may and indigestion, cold and other factors related to the main drug treatment, supplemented by physical therapy, specific need symptomatic treatment, analyze the following: 1. indigestion: 6 months of the baby usually do not pay attention to the dietary laws, eat too full or too fast, may cause indigestion, not only accompanied by dark green stools with mucus, but also accompanied by vomiting, diarrhea, abdominal pain and other aspects of the symptom, you can use to regulate the intestinal tract of the medication, such as probiotics and so on. 2. Cold: 6-month-old babies who sleep or play in the process of abdominal cold will also appear in the above symptoms, can be physical therapy, that is, using both hands to massage around the navel. The above drugs are taken under the guidance of a doctor, not to be used on their own, in addition to the baby may have other reasons for the above symptoms, it is recommended that the hospital in a timely manner to carry out the relevant examination, clear cause of the symptoms of the disease after active symptomatic treatment.