Abstract: Objective :To evaluate the relationship between CT T-staging criteria and survivaltime in esophagus carcinoma treated by nonoperative therapy. Methods :The CT scan data of 304 pa-tients were retrospectively analyzed according to CT-modified T-staging criteria, T₁ 5 cases, T₂ 49 cas-es, T₃ 127cases and T₄ 123 cases. All patients were followed-up after 1 year, 3 years and 5 years, re-spectively. Results :The mean survival time of T₁, T₂, T₃, T₄ was 53.0, 30.6, 17.5 and 15.7 months, re-spectively. The data were analyzed using Wilcoxon methods, T₁:T₃, P=0.036, T₁:T₄, P=0.029; T₂:T₃, P=0.006, T₂:T₄, P=0.001, all had significant difference, but T₁:T₂, P=0.289, T₃:T₄, P=0.438, without sig-nificant difference. Conclusion :CT T staging criteria of esophageal carcinoma is a very useful modalityin evaluation prognosis of no-operation therapy esophagus carcinoma.