Breast cancer chemotherapy 8 times is not necessarily more serious than chemotherapy 6 times. Chemotherapy for breast cancer is mainly to kill the remaining cancer cells in the body and prevent metastasis of cancer cells, which can effectively prevent recurrence of breast cancer to a certain extent, while 8 times of chemotherapy and 6 times of chemotherapy are mainly related to the physical condition of the patients, and the number of times of chemotherapy corresponds to the patients with different physical conditions is also different, so 8 times of chemotherapy for breast cancer is not necessarily more serious than 6 times of chemotherapy. It should be noted that during chemotherapy, patients may have adverse reactions such as nausea, vomiting, dizziness, hair loss, fatigue or cardiac arrhythmia, etc. There is no need to worry too much about this, and family members should always accompany the patient, give the patient enough confidence, and take the initiative to cooperate with the doctor for treatment. Patients are advised to go to the hospital for regular checkups, and if there is any abnormality, they should consult the doctor immediately.