The designer's intention is the essence of design. But the geometric inform
ation is the only one that we handle in the conventional CAD system. In thi
s paper, we propose the description model of designers' intention that migh
t be helpful to reduce the troublesome communications among the designers.
The designers' intention is described as the correlation using the required
functions, the binding conditions, the technical information, the connotat
ional assignments and the geometric information. The required functions are
represented by a tree structure tb show the sequence of designers' conside
ration. The lowest function is assigned to the functional elements that are
selected from the geometric information according to the connotational ass
ignments. Additionally, the binding conditions and the technical informatio
n are related to the functional elements. The effective usage of designers'
intention model is verified under the redesign process. It shows that the
redesign is processed successfully using the designers' intention.