If a one-month-old baby always cries when feeding, the first thing to rule out is whether the mother has cracked nipples, inverted nipples or inflammation of the mammary glands leading to a decrease in milk. If the baby is hungry when he can’t get milk, he will sometimes lose his temper and cry. Is there any position during breastfeeding that makes the baby feel uncomfortable? If the baby is in an uncomfortable position during breastfeeding, the baby will also cry. There is also the question of whether the baby has intestinal flatulence. If the baby suffers from indigestion and bloating, paroxysmal colic may occur during breastfeeding. This kind of crying is more powerful, more difficult to coax. Generally may be a few minutes past the baby quiet, after a while will appear again crying, this situation is mostly colic. You can give the baby to do exhaust exercises, oral probiotics, regulating intestinal flora.