Triple-negative breast cancer is one of the types of breast cancer that occurs mainly in young women and is related to race and genes. The precursor is that patients will have related typical symptoms and accompanying symptoms. 1. Typical symptoms: the lumps of this disease are painless, fava bean-like in size, with unclear boundary, showing burr-like growth, and without complete envelope. 2. Accompanying symptoms: the risk of metastasis is relatively high, and metastasis may have occurred in the early stage of the disease; in case of bone metastasis, the patient will have bone pain, and even pathological fracture; in case of liver metastasis, the patient will have symptoms such as discomfort in the liver area, jaundice, ascites, and so on; in case of lung metastasis, the patient will have symptoms such as coughing, dyspnea, chest tightness and so on, and even hemoptysis may occur. For women, triple-negative breast cancer is a very dangerous disease, and early detection, early diagnosis and early treatment are the keys to cure triple-negative breast cancer and prolong life.