The slow speed of milk production can be caused by ischemia, malnutrition and mammary gland blockage. 1. Body ischemia: some women in the process of delivery or postpartum body blood loss is relatively large, and did not timely replenishment, the pituitary gland during pregnancy edema, body ischemia caused by pituitary gland lesions, affecting the secretion of lactation hormone, resulting in slow milk production, slow milk. 2. Malnutrition: Breastfeeding women do not pay attention to nutritional supplements, excessive dieting or picky eating, malnutrition can also lead to slow milk production. 3. Mammary gland blockage: If the milk ducts are blocked, the milk will not be discharged smoothly and will accumulate in the mammary gland for a long time, which will lead to slow milk production. It is advisable to consult a doctor to determine the cause of the problem and to take care of the nutritional supplements.