Abstract: Objective Through standard collective lesson preparation, the objectives of drawing on the wisdom of the masses, complementing each other's advantages, integrating resources and improving the quality of imparting knowledge and educating people can be achieved.Methods The students' assessment scores of classroom teaching quality of teachers undertaking teaching tasks in the Teaching and Research Office during2014.032015.01 and 2015.032016.01 was used as control group and research group, respectively.The data was compared and statistical analyzed using SPSS.Results The final examination's average score of Medical Imaging Science in research group was 89.59, which is higher than that score in control group (83.13) . And the average score of teaching quality evaluation from students was 95.61, which got an obviously improved compared with the control group (92.26) . T test showed that there was a significant difference between control group and research group both in students' score and teaching quality (P<0.05) .Conclusion There are seven advantages of standard collective lesson preparation: (1) it is conducive to give play to teachers' collective wisdom and realize knowledge sharing; (2) it can help teachers master the key points and difficulties of teaching correctly and improve teaching levels; (3) it is conducive to students' reception of knowledge; (4) it is conducive to enhance the mutual understandings and communication between teachers, cooperative teaching consciousness and cohesive force and create favorable teaching atmosphere; (5) it is conducive to popularize excellent teachers' teachingexperience and make up the one-sidedness and limitation of individual lesson preparation as well as fully improve teachers' qualities; (6) it is conducive to save time, save labor and improve working efficiency; (7) it is conducive to enhance the precaution consciousness of teaching accidents and errors.