Abstract: In response to the Ministry of Education Office issued "on the establishment of vocational colleges and universities teaching diagnosis and improvement system notice." Combined with the actual situation,This paper diagnoses and improves the teaching quality of electrotechnics in higher vocational education.Mainly from the diagnosis of curriculum Quality Course quality improvement Feedback of course quality and Effect Three stages generate market research, Revision of curriculum standards,Optimize teaching Content,Try to reform the teaching method,To diagnose the quality of teaching,According to the diagnosis results to improve aspects such as research.