ObjectiveTo study the situation of grasping knowledge on Cardiopulmonary Resuscitation ( CPR ) among the medical undergraduate interns before going to the clinic.MethodsEighty-five interns enrolled in 2011 were investigated by theory and skill exams to evaluate the cognition level on CPR and the survey results were analyzed by x2.ResultsThe average correct rate of the whole interns' theory and skill was only 44.8％.Theory exams of the clinical group performed better than non-clinical group (x2=8.57,P＜ 0.01 ).There was also no statistically significant difference between the clinical group and the non-clinical group about the average correct rate of the skill (x2=2.72,P＞0.05 )as well as between the female group and the male group (x2=0.03,P＞0.05 ).ConclusionThe medical undergraduate interns'theory and skill of CPR were generally poor,they should be trained before internship.