The series of standard for capacity assessment of clinical trial institution includes the capacity assessment standard for clinical trial institution, the review capacity assessment standard for Ethics committee, the capacity assessment standard for clinical trial professional group, the capacity assessment standard for phase I clinical trial, the capacity assessment standard for biological sample analysis and detection. Both the overall evaluation of the clinical trial institution and the individual evaluation can be carried out independently from the above five aspects. At the same time, the evaluation result decision method is specified in the standard. The purpose is to promote the standardized management of the operation and supervision of clinical trial institutions, promote the self-discipline of practitioners in clinical trials institutions, accelerate the internationalization of clinical trial research in China, and improve the management and research level of clinical trials.