The correct way to express breast milk by hand during breastfeeding is to first wash your hands and breasts, then place your thumb on top of the nipple areola, and your index finger on the bottom of the nipple and areola, then drag your breasts with other fingers, press your thumb and index finger gently towards the chest wall, and then squeeze the sinus of the breasts underneath the areola. The correct way to express breast milk by hand during lactation is to wash your hands and breasts first, and you need to pay attention to each place to press evenly to express breast milk by hand. The finger movements should not be too hard, repeated pressure and release can be squeezed out of the milk. Generally speaking, often squeeze the milk can promote milk secretion, usually if the milk is not enough to squeeze a few times an hour; at the same time, let the baby suck more, can help dredge the mammary ducts to prevent clogging or milk stagnation. However, it is important to pay attention to hygiene in the process of expressing breastmilk, wash your hands and keep your nipples clean, and it is recommended that you consult a professional doctor for details.