Four months after weaning there is still milk production is a normal phenomenon, do not worry too much. Generally, it takes a few weeks to a few months from weaning to no milk secretion, and some people may need a year or even more, mainly because the mechanism of milk secretion in the body has not completely stopped, but the amount of milk secretion will gradually decrease. No special treatment is needed. If there is a change in the nature of the milk or if it is accompanied by unusual symptoms, you should be alert to endocrine dysfunction, breast hyperplasia, breast inflammation, breast tumors and other conditions, so you should pay attention to them and go to the hospital for further examination and timely adjustment and treatment.