Platform design into the concept of lean management, around the whole process of maintenance, all elements, omni-directional, all-staff lean in-depth research: covering the preparation stage before maintenance, the implementation stage in maintenance and the evaluation and summary stage after maintenance. Including scope, quality and other five control elements, including operation level, management level, command and decision-making level of personnel, etc., from the attribution of maintenance personnel, it is divided into factory personnel, external maintenance personnel, supervision personnel.