If both breasts with a breast pump sucking once recommended 5-15 minutes, but due to the different amount of milk stored in each maternal breasts, different types of breast pumps, there is variability in the time of sucking. 1. The amount of milk: If the amount of milk is more, you can increase the number of times of breast pumping, it is recommended to pump every 2-3 hours or so, and it is recommended to pump for about 10 minutes at a time, but for the case where the amount of milk is relatively small, it is not recommended to pump for more than 10 minutes on one side of the breast. 2. Types of breast pumps: There are many types of breast pumps, including manual breast pumps and electric breast pumps, while manual breast pumps are slower and take a longer time to suck milk, and it is recommended that the time for sucking milk from one side of the breast should not be more than 15 minutes, while electric breast pumps are faster and the time for sucking milk is recommended that the time should not be more than 10 minutes. It is recommended to choose the right breast pump according to your own situation under the guidance of the doctor, sucking milk within the specified time, avoiding too much strength when sucking milk, and avoiding too frequent. And every time the breast pump before sucking milk to clean the breast local skin, after sucking milk to the breast pump to sterilize, in order to prepare for the next use.