Plagiarism is a real problem that has always plagued the education industry.The advancement of the digitalization of teaching has brought about the innovation of teaching methods,but it also faces this old problem.Course teaching in colleges and universities should regard assignment structure design,staged learning situation analysis and assignment tutoring feedback as an indispensable and important link in the teaching operation sys-tem.Timely monitoring and feedback of assignment plagiarism is a key task that cannot be ignored in the entire teaching process,and it is also an effective way to improve the teaching environment,and it cannot be judged only by the final exam.The teaching practice carried out in this paper is based on this perspective.A plagiarism moni-toring and identification method based on the digital assignment operation mode is proposed,and a teaching idea combined with assignment design and tutoring feedback is proposed.This paper attempts to use digital platforms such as QQ questionnaires to manage student assignment in order to achieve the transformation from paper assign-ment to electronic assignment.Through verification in course teaching practice,the digital transformation of as-signment can help to achieve better work efficiency and teaching effect.