The purposes of this paper are to construct the author tools that have influence on system package in EXSYS professional, to design the objects and the roles of development members on the phases of development life cycle, to study on the increase of efficiency in the main phases that have much influence on the efficiency of authoring tool development. The major factors which affect authoring tool are as follow : the size of the product, the individual capability of project personnel, the project period, the complexity of the product, the required level of reliability and the level of technologies utilized.