Large sets of conceptual schema have been constructed for database design. In recent times, the need of analytic aid for schema reuse is increasing. In this paper, it is presented analysis technique of conceptual schema, and experimented schema analysis for extraction of reference schema. It is desirable for integration of related schema to have been applied in case of similarity value above 0.6. Reference schema which is created through the analysis technique enable to describe concepts of them and can be the way of schema reuse. And a feature analysis can be effective measure to set details of analytic data which is necessary for extraction of reference schema.