Teachers adaptive expertise is an important ability to promote their lifelong learning,which is considered as a new goal for teachers learning and professional development gradually.And Case-based reasoning (CBR) is a process that solves new problems by adopting previously successful solutions to similar problems.Essentially,it is a cognitive process to promote the transfer of empirical knowledge learning,which can bring a new recognition to the professional development of teachers.So this study will elaborate the internal cognitive mechanism of each stage in case reasoning based on a typical CBR model—Four Res cognitive model (Retrieve,Reuse,Revise,and Retain).In addition,considering case-based learning is a highly effective means for teachers to master empirical knowledge and problem solving skills.This study aims to design a case-based learning support framework based on the four Res cognitive model,which includes problem space,collaborative learning,and reflection learning support,to promote the abilities of teachers problem solving and reasoning,as well as the improvement of their metacognitive awareness and innovation.