Abstract: Objective To analyze cause of medical accidents and actuality of technical identification in medical tangle. Methods 32 cases(17 death,15 survive) of medical tangle by technical identification (according to sex?age?mostly diseases ?sequel ) and identified results( whether or not mistake?cause and effect connection?duty degree)have been studied. Results 13 cases of 32 medical accidents have been determined.19 cases have been attributed to no medical accidents. Causes of medical accidents were most due to negligence of sense of duty. Conclusion The incidence rate of medical accidents can be decreased by strengthen colligated stuff of medical affairs personnal. We suggest that our state bring out more perfect legislation of autopsy in order to gain positive effect of technical identification in medical tangle. The medical mistake among grade of medical accidents should be added so that justice of identification could be improved.

Key words: medical association, medical tangle, medical accidents, technical identification