Patient: Description of the condition (onset time, main symptoms, hospital visited, etc.): Good results of minimally invasive laser surgery What kind of help do you want: Can I switch to epirubicin instillation? Niu Yinong, Department of Urology, Beijing Chaoyang Hospital: At present, the worldwide guidelines are basically unified, after transurethral bladder tumor electrosurgery or laser resection, as long as the bladder wall is not penetrated, there is no serious hematuria, and the trauma is not very large, all advocate bladder perfusion chemotherapy within 24 hours, the NCCN guidelines say perfusion within 6 hours; the drug mitomycin perfusion is more effective; high grade or in situ cancer perfusion BCG vaccine is good However, there is no BCG vaccine for bladder perfusion in China, but there should be in Hong Kong and commonly used abroad.