The amount of milk produced by one breast is affected by a variety of factors such as breast size, the number of mammary glands, diet and genetics. The amount of milk produced by one breast is also dynamic, and may initially be less than 70mL, but later may reach 200-300mL. When a woman starts breastfeeding after delivery, the amount of milk produced is usually small, usually no more than 70mL, but as the baby’s ability to suckle increases, the amount of milk produced increases gradually, and with more suckling, the amount of milk produced by one breast may reach 200-300mL. In addition, breastfeeding habits can also affect the amount of lactation from one breast. In the process of breastfeeding, women need to pay attention to the habit of breastfeeding regularly. Each time they breastfeed, they should suck up the milk from one breast and then switch to the other breast, alternating between the two breasts. At the same time, you need to pay attention to keeping your nipples and breast area clean and hygienic, wear a loose fitting breastfeeding bra, and choose a high quality protein diet, such as chicken, fish and beans, to help promote lactation. Keep your mood relaxed in your daily life, try to get enough sleep and avoid emotional tension and anxiety, as bad emotions can also affect the lactation process.