Objective To analyze the experiences and lessons in two rounds of drug resistance surveillance in Henan province for reference to the colleagues who are going to do DRS. Methods Collected and analyzed the materials from the summarized report and special report in two rounds DRS in He'nan province. Then analyzed the main problems and lined it in the tables for comparing and statistics. After discussing, the main participated working staffs gave the ideas and suggestions. Results (1) If the drug using...