Yao Beina, a famous young singer, died in the afternoon of January 16, 2015 at Peking University Shenzhen Hospital after a recurrence of breast cancer. When such a news came out, it was like a heavy bomb in my surroundings, especially among patients. People started to panic because they felt that breast cancer was so close to them; patients panicked even more because they felt that even such a strong Yao Beina was beaten down, what would happen to them? Therefore, I think it is necessary to popularize some general knowledge about breast cancer to everyone. The incidence rate of breast cancer is much higher in developed areas than in remote areas. In China, with the improvement of living standard and change of lifestyle, the incidence rate is also increasing year by year and the age of incidence tends to be younger. However, because of increasing health awareness, more early detection and advancement in treatment technology, the survival rate of breast cancer patients is greatly improved. Therefore, it is necessary to be able to detect the disease in time and to perform self-examinations and regular medical checkups. What are the symptoms that you should be alert to the occurrence of breast cancer? Breast cancer is usually asymptomatic, but women sometimes find breast problems on their own. The common signs and symptoms are as follows: 1) painless lumps; 2) changes in size or shape; 3) changes in nipple or outflow of milk; 4) dimpling or orange peel-like changes in the skin; 5) lumps can be found in the armpit. If any of these problems occur, we recommend that you seek immediate medical attention. Finally, it is important to emphasize that while self-examination is important, regular medical checkups with a specialist are even more important.