Diarrhea in a 1.5 year old baby is mostly caused by improper feeding, and attention needs to be paid to the baby who can be given a hot towel or hot water bag to warm up the small tummy. At the same time, if breastfeeding, the mother in the diet to easy to digest, liquid diet, avoid taking spicy stimulating, greasy food. If you are formula feeding, don’t make it too thick or too thin, you can give your baby mamma love, probiotics, to regulate the baby’s intestinal flora imbalance. If the diarrhea is more serious, pay attention to prevent dehydration, it is recommended to feed the baby more water, pay attention to proper rest, do not let the baby overexerted. At the same time, you can give your baby an abdominal massage. If it is still not effectively relieved, it is recommended to go to the hospital in time.