Milk and milk blockage can be differentiated from the meaning, performance and symptoms, when there is obvious discomfort in the breast area, you should consult a doctor in a timely manner. 1. Different meanings: milk is mainly due to the mammary ducts are not smooth, milk discharge caused by excessive milk in the breast, breast fullness, pain; blocked milk is mostly seen in the first-time mothers, refers to the lactation of milk stagnation, the discharge of the situation is blocked. 2. The performance is different: the breast is hard and lumpy, and after sucking out the milk, the breast can become soft; when the breast is blocked, the whole breast will be hardened and swollen, and it will be very sensitive to touch, and there will be pain when touching it, and the surface of the breast will be uneven and nodular when touching it. 3. Symptoms are different: milk is continuously no milk discharge, can not breastfeeding, breast swelling and pain, redness, hardness or small cysts, accompanied by fever, fatigue, loss of appetite, etc.; blockage of the early stage of the manifestation of breast swelling and pain, local redness of the skin, pain, and in severe cases, there will be a high fever, chills and so on.