Manual milk emptying can prevent milk stagnation, which consists of 5 steps, including putting, pushing, turning, repeating and rotating. 1. Putting: Put your thumb, fingertips and middle finger each in a position about 2.5 to 4 centimeters behind the nipple, where the fingers are located should be the milk sinus where the milk is stored. 2. Push: Without separating your fingers, push towards your breasts. If your breasts are large, you can first lift them upward and then push them straight toward your breasts. 3. Rotate: The thumb and two other fingers rotate forward, like pressing a fingerprint identification. 4. Repeat: Repeat the above three motions rhythmically and repeatedly to discharge milk from the sinuses. 5. Rotate: Rotate the thumb and the other two fingers to squeeze out the milk from the sinuses. If after the above operations, you still fail to empty the milk, or breast pain, redness and swelling during breastfeeding, 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, symptomatic treatment.