T1NOMO1 grade breast cancer refers to breast cancer with a diameter of ≤2cm, no lymph node metastasis and distant metastasis, often manifested as painless single lump, which can be treated by surgical excision. T1NOMO1 breast cancer belongs to early stage breast cancer, the main clinical manifestation is the appearance of painless, solitary small lumps on the diseased side of the breast, which is often found unintentionally by the patient, and is not accompanied by axillary lymph node and distant organ metastasis, and the patient usually does not have other uncomfortable symptoms. The main treatment for early breast cancer is surgical resection, which can be supplemented by chemotherapy, radiotherapy, endocrine therapy, targeted therapy and other treatment modalities, and generally the 5-year survival rate of early breast cancer patients can reach more than 90% after treatment. Therefore, T1NOMO grade 1 breast cancer patients should go to the hospital in time and take appropriate treatment measures with the help of doctors to control their condition, and it is recommended that patients build up their confidence in treatment and take active treatment.