As the number one killer of women’s health, the incidence and mortality rate of breast cancer in China are rapidly increasing, and the trend is significantly younger. To prevent and treat breast cancer, we need to have correct understanding, and it is very important for women to stay away from misunderstanding. Compared with advanced countries, the age of onset of breast cancer in China has advanced ten years. In foreign countries, the incidence of breast cancer is usually higher than 60 years old, while the age of breast cancer patients in China is “bimodal”: the first high incidence age is 45 to 50 years old, and the second high incidence age is 60 to 65 years old. However, young faces are becoming more and more common in clinical practice. Some 18- and 20-year-old female students have breast cancer, but their parents do not pay attention to it, and the treatment is not timely, “A 20-year-old female university student from abroad had a lump in her breast, and it was not until two years later that her mother brought the lump to the hospital, and the small operation turned into a major operation! Don’t think that because you are young, you won’t get breast cancer and be careless. Many people mistakenly believe that the only symptom of breast cancer is a soft or hard lump in the breast. Many women think that early detection of breast cancer can be achieved by “self-touching”. Although self-examination is very important, since the initial stage of cancer is very small and women are fat and thin, only an experienced specialist can feel the lump in the early stage. Moreover, some breast lumps are breast enlargement rather than cancer, so some people mistakenly think they are cancer, but they scare themselves. Early detection of breast cancer and regular specialist examination are indispensable. 3. Poor compliance and blind superstitious belief in Chinese medicine and expensive drugs If early stage breast cancer can be treated with timely surgery and adjuvant treatment, the cure rate can reach 95%. However, many patients blindly believe in traditional Chinese medicine and certain “prescriptions”, and the treatment is not standardized, resulting in more and more serious treatment. On the contrary, there are some patients who blindly believe that expensive and new drugs are the best ones. In fact, it is necessary to listen to the professional advice of breast cancer specialists and follow the indications and guidelines of the drugs, because they will choose the most suitable drugs according to the actual condition of the patients. To prevent breast cancer recurrence and metastasis, chemotherapy and endocrine therapy are both effective in adjuvant treatment, but because chemotherapy drugs can bring different degrees of physical discomfort while killing cancer cells, some people will be troubled by hair loss. In the current adjuvant chemotherapy regimen, experts generally use two or three drugs in combination to achieve the best efficacy with the least side effects, but for some breast cancer patients, chemotherapy with antibiotics like Adriamycin has strong anti-cancer activity, but while killing cancer cells, it has the same killing effect on rapidly proliferating cells, which brings patients common side effects such as bone marrow suppression, vomiting, nausea and hair loss. Therefore, patients should not be afraid to give up the treatment, and the hair will grow back after stopping the drug. We recommend that women under the age of 35 should receive annual ultrasound or color ultrasound examinations, and that mammograms are effective for women over the age of 35 whose breast tissue has gradually begun to shrink and be replaced by fatty tissue. For those who are at high risk of breast cancer, such as those who are younger than 12 years old at the first menstruation or older than 55 years old at menopause, those who have had their first child older than 35 years old or have not given birth, those who have not breastfed after giving birth, and those who have breast cancer in their family, regular mammograms are recommended in combination with monthly self-examinations and regular clinical checkups.