This paper analyses the interence between variabilized and parametric technology. A new design method of variabilized based on constraint is presented. The variabilized method has improved on the basis of parametric. In the variabilized, the definition of constraint has ultimate change that divides the constraint of dimension parameter into the two different types of constraint: shape constraint and dimension constraint, and the condition of project constraint with geometry equation are solved simultangously. According to a set of variable basic rules, with a based on data structure of crossed chaining table, the algorithm of constraint solving is realized. The solving algorithm increase the flexibility of graph model and enhance the effectiveness and reliability of graphic designing.
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