If breast cancer has no metastasis in supraclavicular fossa but is accompanied by metastasis in other parts, it means that the condition is more serious; if it is not accompanied by metastasis in other parts, it means that the condition is not so serious. The absence of metastasis in supraclavicular fossa of breast cancer only means that the malignant cells have not metastasized to the supraclavicular fossa, and it does not mean that they have not metastasized to other places. If there is no metastasis to other places, the prognosis is relatively good, actively cooperate with the doctor to receive surgical treatment, remove the diseased tissue on the breast, and there is a possibility of curing the disease; If metastasis has occurred to other parts of the body such as bones and liver, the disease is more serious at this point. At this time, the opportunity of surgical treatment has been lost, and it is necessary to receive comprehensive treatment such as radiotherapy, chemotherapy and targeted therapy to prolong the patient’s survival time as much as possible, and the prognosis is generally poor. Breast cancer patients should actively cooperate with doctors to improve the imaging examination. Only when the stage of the tumor is clear can the patient’s condition be clarified and a personalized diagnosis and treatment plan be formulated.