Weaning for a year and still able to squeeze out white fluid may be a normal physiological cause, or it may be caused by hyperprolactinemia. 1. physiological reasons: physiological reasons are mainly milk stagnation. Milk stagnation refers to the poor discharge of milk from one glandular lobe during the breastfeeding period, resulting in milk stagnation. Thus, one year after weaning, a small amount of white liquid similar to breast milk can still be discharged by squeezing the breast. 2. Hyperprolactinemia: usually characterized by elevated blood prolactin, the increase in blood prolactin will inhibit ovarian function, ovulation, and the production of estrogen and progesterone. It often manifests itself in delayed menstruation, infertility, swelling of the breasts, and even milk secretion. Weaning for a year can still squeeze out white fluid also have to consider other diseases that cause nipple overflow. Therefore, women who can still squeeze out white fluid after one year of weaning should go to the hospital in time and ask the doctor to conduct a detailed examination and judgment in order to determine the further treatment plan.