Reasonable transition between theoretical and design teaching is one of the teaching of the problems to be considered in residential district planning and design course are include. Research-based case method that can effectively undertake theoretical and design teaching is kind of case method. This article briefly introduced the concept, function and application of research-based case method, specifically addressed the requirements of the case research report and classroom discussion. It aims to enrich teaching method in residential district planning and design course and gave reference for teachers in their work.