Objective To compare the therapeutic effect and adverse reaction of lobaplatin and cisplatin for treatment of Malignant Pleural Effusion.Methods A total of 60 patients with Malignant Pleural Effusion were treated by the way of intrapleural injection.The patients were divided randomized into two groups:30 cases were injected lobaplatin (LBP group), 30 cases were injected cisplatin (DDP group).Results The clinical efficacy were not significantly different between two groups(P>0.05).The incidences of WBC reduction,hypohemia,sicchaisa and vomit were significant higher in DDP group than that in LBP group(P﹤0.05).Conclusion The treatment of Lobaplatin showed almost the same clinical efficacy compared to the therapy of cisplatin in treatment of malignant pleural effusion,but with less side effct.