Breast cancer chemotherapy interruption for one month is influential, which may accelerate the proliferation rate of tumor cells or cause patients to be insensitive to the drugs, so it is not recommended to interrupt chemotherapy. Chemotherapeutic drugs for breast cancer include cisplatin, cyclophosphamide, fluorouracil, paclitaxel, etc. These chemotherapeutic drugs are able to effectively reduce the tumor foci, inhibit the proliferation and spread of the tumor, and significantly improve the prognosis of the disease. If chemotherapy is interrupted, due to the loss of inhibition of chemotherapeutic drugs, tumor cells may accelerate proliferation and metastasis, resulting in very serious consequences, and patients may not be sensitive to the drugs, which may cause difficulties in subsequent treatment. Therefore, it is not recommended that patients interrupt chemotherapy without authorization. It is recommended to actively cooperate with doctors to carry out standardized treatment to avoid delaying the condition.