In order to take advantage of visualization characteristics of computational geometry combined classifiers, a
weight calculation method based on space fuzzy is proposed according to the category distribution in class space. In this
method, the space is turned from the category information in space to the space information in category. The space fuzzy
is obtained from the later based rough set theory and taken as the weight for the sub classifier. The experiments show that
the classifier weighted by using the fuzzy degree can enhance the visual performance and the classify performance of the
classifier. It means that the comprehensibility of the classifier is enhanced and the application of the classifier is extended.