It is common to have fever after chemotherapy, which is also an adverse reaction caused by this treatment. It can be alleviated through proper rest and active water supplement. After chemotherapy, the patient's body resistance and immunity will also be correspondingly reduced, vulnerable to bacterial and viral infection, which will cause fever. When the symptoms are serious, you can also take medicine for treatment. After chemotherapy, it is generally necessary to take Chinese medicine together to improve immunity. At the same time, close observation should be carried out to understand whether the physical symptoms have been alleviated.