The fact that the left side of the mother’s milk is less than the right side of the milk is more than the right side of the mother’s milk may be due to the mother’s right side of the milk, the left side of the milk ducts are not smooth and so on. 1. only use one side of the breast to breastfeed: maternal long-term use of the right breast, this side of the breast to receive more stimulation, can promote this side of the mammary glands secretion of milk increased, while the left breast can not be stimulated, the milk will be reduced 2. The left breast tube is not smooth: such as mastitis, breast cysts, etc., will lead to the left breast tube obstruction, can not discharge milk smoothly, then the mother’s left breast will have breast swelling, pain, redness, nodules and other symptoms. If the left side of the mother’s breast has less milk and the right side has more milk, it is recommended that the mother feeds her baby from her left breast more often. If the mother’s left breast has swelling and pain and other symptoms, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor, improve the relevant examination, to clarify the cause of the disease, and symptomatic treatment.