This revealed that CD147 expression is correlated with a poor prognosis for bladder cancer in almost all subgroups (P<0.05), except multivariate analysis of OS (P=0.081) and DSS (P=0.068) in positive cell percentage only subgroup and multivariate analysis of DSS (P=0.153) in non- streptavidin-perosidase (SP) subgroup. The gene discussed is BSG; the disease is urinary bladder carcinoma.