Suction with a breast pump does not lead to a return of milk and does not reduce the amount of milk produced. The breast pump uses the principle of negative pressure to suck out the excess milk through negative pressure, which reduces the local swelling and pain of the breast. In addition, if the baby does not finish eating, the milk may accumulate in the breast and cause an inflammatory reaction, so using a breast pump to suck out the milk will prevent this phenomenon from happening. So using a breast pump is a better way to suck breast milk, it is recommended to use it correctly, and before using a breast pump, you should first pay attention to the local hygiene of the breast pump, do a good job of disinfection and clean the local hygiene of the breast, you can wash the breast with water and apply a hot compress before using the breast pump to suck breast milk.