Due to its special advantages，quantum information technology has attracted more attentions，and is considered as the trend of information technology.Thus，the training of students and engineers with a background in quantum mechanics is considered as a strategic task for future talent reserves.However，due to the abstraction，intersectionality，cuttingedge and complexity，the experimental course is difficult for undergraduate students.In this paper，the course，quantum key distribution，in Sun Yatsen University is introduced and it is hoped to be of some help to the teaching and training of quantum information technology.