Loose teeth after chemotherapy can be improved through general treatment, periodontal fixation, adjustment of chemotherapy drugs and other measures. 1. General treatment: After the loosening of teeth after chemotherapy, it is recommended to keep the oral cavity clean and hygienic, rinse the mouth frequently, eat a light diet, avoid eating hard food, and quit smoking and drinking. 2. Periodontal fixation: If the loosening of teeth is serious, the teeth can be fixed by braces to improve the symptoms of loosening of teeth. 3. Replacement of chemotherapy drugs: Loose teeth during chemotherapy may be an adverse reaction to the drugs, you can reduce the dosage or replace the chemotherapy drugs under the guidance of the doctor. It should be noted that periodontal infection, trauma and other causes can also lead to tooth loosening. It is recommended that patients go to the hospital in time to improve their symptoms through standardized treatment under the guidance of professional doctors.