The side effects of piroxicam treatment for bladder cancer mainly include bone marrow suppression, hair loss, gastrointestinal digestion, cardiotoxicity, liver and kidney function. 1. Bone marrow suppression: piroxicam treatment may cause the organism to suffer from thrombocytopenia, leukopenia, anemia and other symptoms. 2. Hair loss: Hair loss may occur after 1~2 courses of treatment through piroxicam. 3. Gastrointestinal digestion: loss of appetite, nausea, vomiting, diarrhea and other phenomena will occur after using the drug, mainly due to the stimulation of the gastrointestinal tract caused by chemotherapy drugs, but also according to the individual’s physical condition, psychological factors have a relationship. 4. Cardiotoxicity: Pirarubicin can cause patients to develop arrhythmia and electrocardiogram changes, which is related to the accumulation of the drug, and the electrocardiogram should be monitored on time during the course of taking the drug. 5. Liver and kidney function: Pirorubicin has a certain effect on liver and kidney function, therefore, it is necessary to monitor liver and kidney function during treatment. It is contraindicated in pregnant women and in those who are allergic to this drug. Patients need to follow the doctor’s instructions to take medication, do not stop taking medication without authorization, if encountered problems, consult the doctor.