Abstract. For the bridge temporary structures, the present mainstream calculation method is based on dialog box data entry or command flow technology, in view of their insurmountable defects, a new calculation method based on graphic flow technology is presented and implemented in this paper. The comprehensive solving process of bridge temporary structure is planed and decomposed into a series of easily implemented sub-steps, their calculation models can be described by a group of independent and cooperative function graphic object types, in which global or local structure features, construction specifications, dynamics characteristics, engineering experience, intention expression, expert solving plan and other comprehensive application knowledge can be expressed easily. By creating, operating and deducting these function graphic objects, the solving sub-steps can be easily implemented. As a result , the comprehensive solving process for bridge temporary structure based on engineering features can be realized , and the simplification and high efficiency of solving process are achieved. The new method is also can be applied to other complex engineering structure fields, development practice shows its broad application prospect and development space.