This research employed Cognitive Diagnostic Theory on the listening comprehension test of CEPT.Based on the G-DINA model,it made an analysis of the listening comprehension test,which composed of 40items,and of the responses from 2691learners to explore their weaknesses and strengths.Listening comprehension ability is defined from the perspective of communicative language ability model and cognitive psychology theory,which involved 8major attributes.Diagnostic information was provided to the overall group,three listening proficiency gr...