Wild bear bile, i.e., bear bile, is not usually used for the treatment of bladder cancer. Bladder cancer is the fourth most common malignant tumor among men and the eighth most common malignant tumor among women, with clinical manifestations of intermittent painless hematuria, urinary tract irritation and urinary difficulty, and in the late stage, it can have infiltration around the pelvic floor and metastasis from distant places, which will lead to corresponding clinical symptoms. The treatment plan needs to be based on the condition, the patient’s own situation, etc. to make a comprehensive judgment. Surgery is the main treatment for non-muscle invasive bladder cancer, while surgery combined with chemotherapy is the main comprehensive treatment for muscle invasive bladder cancer. There are no pharmacological studies and literature records showing that bear bile has a therapeutic effect on bladder cancer. If bladder cancer is diagnosed, the treatment should be standardized under the guidance of doctors to avoid delaying the condition. Bear bile is a kind of Chinese herbal medicine with bitter and cold flavor, which belongs to liver, gallbladder, heart and stomach meridians. It has the efficacy of clearing heat and removing toxins, killing worms and stopping bleeding, calming wind and relieving spasm. It is used in the treatment of summer-damp diarrhea, damp-heat jaundice, fever and epilepsy, laryngeal paralysis (sore throat), eye redness and cataract, furuncle, hemorrhoidal leakage (hemorrhoids combined with anal leakage), ascaris lumbricoides, chancre, and many kinds of hemorrhage. The adverse effects of this product are not clear, and this product should be contraindicated in cases of deficiency and cold. It should be used reasonably under the guidance of a doctor.