The first symptoms of postpartum breast accumulation are breast swelling and pain, one or more lumps when touching the breast, normal or slightly red skin color of the breast, and pressure pain with burning sensation. Self-judgment is usually to feel the swelling and pain of the breast, and then the child can’t feed easily when sucking milk, and when you touch the breast, there are hardness and lumps, so you can judge that there is a breast accumulation after delivery. If necessary, further ultrasound examination of the breast can be performed.