A recent large-space structure is frequently made by light-weight structural system and it has a good mechanical efficiency. To make the light-weight structural system we are using tension members mainly. Since cable dome structures which are a soft structures are very flexible, stresses and nodal coordinates of the other members are changed when we control the stress of one member. Therefore we have to do two kind of works for effective and accurate construction of the cable dome structures. The first work is to make a working scenario to complete the final objective form, and the second is to revise constructional errors occurred in process of actual works. These works are called constructional analysis. In this study, we try to approach the constructional analysis of the cable dome structures using the numerical method, and then verify it.