Abstract: This paper discusses the design procedure and sequence for engineering system from point of view of system engineering.Based on the study of present design sequences, the multi-dimensioncharacteri sties of design procedure have been analysed. Three kinds of idea used in arrangement of design sequence, based on time frame, system composition and design logic, have been induced.And the internal relation and administrative levels among them have been studied.A concept of three-dimension design sequence and a general model used to indicate the order and the phase division about design work are presented.This model can be used as the base to draw up the different design sequences.