Feeling bloated in the breasts while eating may be related to conditions such as impending menstruation, breast enlargement, lactation, and pregnancy. During the process of eating, food will not enter the patient’s breasts and will not lead to a feeling of breast swelling. 1. Impending menstruation: If menstruation is imminent at this time, due to the influence of hormone level changes, women will experience symptoms such as breast swelling, pain, grumpiness and abdominal discomfort. 2. Breast Hyperplasia: If the patient herself has breast hyperplasia, it will manifest itself in symptoms such as cyclical breast swelling and pain, and breast lumps. If you are too tense or just lose your temper before eating, the symptoms will become obvious. 3. Milk secretion: If you are breastfeeding at this time, your breasts will secrete milk at any time. If you empty your breasts just before eating, your breasts may be swollen due to the secretion of milk, which fills up the whole breast. 4. Pregnancy: If a woman is pregnant, it is normal for her breasts to increase in size during pregnancy in preparation for breastfeeding in the future. Breast swelling when eating should also be considered as breast trauma, mastitis, breast tumor, etc. As there are many reasons, patients should consult the doctor in time to do systematic examination and make a clear diagnosis.