In modern society, women often take on multiple roles as women in the workplace and as masters of the family, and the strain and stress often induce breast diseases. More and more women are beginning to pay attention to breast health care, and they often find nodules in their breasts unintentionally, which brings great psychological burden because they are worried whether it is a serious disease such as breast cancer. Are breast nodules necessarily breast cancer? No. There are often various conditions when breast nodules are felt, such as breast fibroids, breast hyperplasia, inflammatory nodules, breast cancer, and so on, which need to be further examined and diagnosed according to the situation. I. Breast fibroids. Most common in young and middle-aged women, these breast masses are often round or oval, with clear borders when touched, and are usually painless when touched. Second, mastopexy. In terms of symptoms, the main manifestations are breast nodules and breast pain. Mammary nodules have unclear borders and a hard texture, and their texture usually changes with the menstrual cycle, and breast pain is also related to the menstrual cycle. Third, inflammatory nodules. This kind of nodule usually has a soft texture to touch, good mobility, and tastes accompanied by pressure pain. Patients may even have accompanying symptoms such as chills and fever. IV. Breast cancer. Breast cancer nodules are usually hard to touch, with unclear borders and poor mobility, usually without pressure pain, and some patients are accompanied by breast skin changes, such as redness, orange peel-like changes, and indentation.