Objective To observe the effect of ranitidine and bismuth subcitrate combined treatment of children with peptic ulcer. Methods Children suffered from peptic ulcer served as objects,they were treated with ranitidine( ranitidine treatment group,n = 45),or treated with ranitidine and bismuth subcitrate( combined treatment group,n = 50). The difference of therapeutic effect and the incidence of adverse reactions of the two groups were compared. Results The combined treatment group the total effective rate of tr...