In the research field of second language acquisition and foreign language learning,＂Motivation decline＂is a very common and obvious phenomenon.Based on Dornyei＇s demotivation theory,this paper takes some research results at home and abroad as references,and discusses English learning motivation decline factors of Non-English major students of colleges and universities in minority areas through questionnaire surveys to students.To further stimulate and maintain students＇ English learning enthusiasm,this thesis also puts forward some feasible suggestions.