Soft teeth after chemotherapy for leukemia may be caused by chemotherapy side effects, infection, etc., and need to take close observation, anti-infection treatment and other relief. 1. Chemotherapy side effects: chemotherapy drugs for leukemia have certain toxic side effects, and after the drugs stimulate the gums and surrounding tissues, patients may experience tooth tenderness and pain, which generally do not require special treatment, and can be naturally improved and restored in a week or so. 2. Infection: the immunity of the patient after chemotherapy will be reduced, such as not good oral hygiene, resulting in gingivitis, etc., may also appear soft teeth phenomenon. Need to use antibiotic drugs in time for anti-infection treatment, the more commonly used are clindamycin hydrochloride, azithromycin, cotrimoxazole mouthwash, etc., the specific use of drugs, follow the doctor’s instructions. After the chemotherapy of leukemia, the teeth are soft, it is recommended to do a good job in time to investigate the cause of the disease, under the guidance of the doctor to carry out targeted treatment.