Objective To investigate the clinical rule,and give better guide to the diagnosis,therapy and judge ment of prognosis for the patients suffering from gastric cancer with pyloric obstruction.Methods We summarized 108 cases suffering from gastric cancer with pyloric obstruction,and studied according to staging TNM for gastric cancer.Results The rate of the cases in T 4N 2M 1 was 66 6%.The time of obstruction on average was 11 4 days in grade Ⅰ、Ⅱ、Ⅲa,and 50 4 days in grade Ⅳ,P