This was the report of "Authorized Environmental Analysis Organization Management Services Project of year 2011" of Environment Analysis Laboratory, Environmental Protection Administration, Executive Yuan. The accreditation works of quality system and testing techniques of applied items for both new-setup and in-operation laboratories had arranged based on the "Management Regulations of Environmental Analysis Organization" and the "Management Regulations of the Motor Vehicle Emissions and Noise testing organizations". These auditing works included laboratory quality management system auditing, testing techniques auditing (in-lab instrumentation and in-field sampling), and performancy tests (in-lab and in-field). After these auditing works had been done, the Technical Assessment Committee evaluated the records of these auditing works and made the final decision of approval of the application of new-setup or/and in-operation laboratories. One auditing methodology conference for the auditing specialist and the members of Technical Assessment Committee and a conference for the authorized environmental analysis organization were held in this year. There were 137 cases of documentation evaluation, 70 cases of quality system auditing, 62 cases of performance testing (in-lab and in-field), 227 cases of testing techniques auditing(in-lab instrumentation and in-field sampling) and 201 cases of report signatory qualification had been evaluated within 11 Technical Assessment Committee meetings. In order to further improved the efficiency of the accreditation working processes and reduced the workload of auditing specialists and administrative staffs, a modified management system had been announced. To finish all the application processes takes 110 to 180 days in the old management system, and only takes less than 60 days in the new management system by combining the related in-field auditing and reduced the performancy test frequency of the qualified authorized environmental testing laboratories. There were 2,425 performancy test samples sent to 101 laboratories this year, the satisfactory rate of performancy test was 96.4%. There were 36 laboratories participated the test flow rate measurement, the satisfactory rate of container method was 94.4% and that of tachometer method was 88.5%. There were no significant differences in the statistic information of auditing reports and performancy test results after the new policy of management system.