You can’t use a breast pump when you have no milk after giving birth to a baby, it can’t suck out the milk and may cause breast discomfort. Breast pumps are generally used when there is milk but it is not discharged well, and the use of breast pumps when there is no milk in the postpartum period can not promote milk secretion, and it will not be able to suck out the milk, and it may also cause discomfort such as redness, swelling, and pain in the breasts. If there is no milk after delivery, you can gently massage your breasts to promote the secretion of milk from the mammary glands, and you can also eat more soups, such as fish soup, pork chop soup, etc., which will help the secretion of milk. If there is still no milk, you can take lactation tablets and other drugs to promote lactation. In addition, the mother should also maintain a good mood, to avoid emotional fluctuations and affect the secretion of milk. Clinical mothers with symptoms of milklessness should go to the regular hospital in time, under the guidance of the doctor’s treatment, do not self-medication, so as not to affect the development of the baby.