After the higher education entering the stage of popularization, China has put forward new requirements for promoting the revolution of higher education quality and constructing quality culture, making the importance of undergraduate program education quality assurance more and more prominent. Engineering education of American colleges and universities explores the theory and practice of continuous quality improvement of program education, which can provide a reference for the quality assurance in undergraduate program education in China. Under the guidance of program accreditation agencies, the concept of continuous quality improvement has been internalized by American colleges and universities as the core concept of the quality assurance of program education; the process of continuous quality improvement is gradually optimized, covering the definition of educational objectives of engineering program, the definition of expected educational outcome of engineering program, the confirmation of evidence that can prove educational outcome, etc.; the continuous quality improvement is confronted by technical dilemma which have caused pressures and challenges for engineering faculty to develop new methods; the concept of continuous quality improvement guides and forms positive assessment, empirical and quality cultures.