Objective To assess the feasibility and effects of the improved K-W-L teaching method for dental trauma teaching in the oral emergency department. Methods 118 residents,participating in the dental trauma training of the Oral Emergency Department of Peking University School and Hospital of Stomatology in 2015 and 2016,were randomly assigned to two groups. The experimental group used the improved K-W-L teaching method,the control group used the traditional teaching method. The effect of teaching method was evaluated by the scores of written examination and clinical examination. Every participant assessed the improved K-W-L teaching method at the end of the training. Results In written examination,the average score of the experimental group was (88.6±3.2),while the average score of the control group was(84.3±4.4),and the difference was significant (P<0.001). At the end of training,all residents met the clinical training requirement. In clinical examination,the excellent rate of each item in the experimental group was higher than that in the control group,there were significant differences between the two groups in terms of “organization and efficiency “ and “counseling”(P<0.05). All participants were satisfied with the teaching method. Conclusions The improved K-W-L teaching method is worth popularizing in the dental trauma teaching of the oral emergency department,as it can consolidate the previous knowledge,give prominence to the key points of dental trauma,and also improve the interest and initiative of the physician.