Objective：The purpose of investigation is to find out the behavioral characteristics of patients under anger and suggest targeted interventions. Method: Through the way of the field questionnaire survey of three hospitals in Tianjin, 230 patients participated in the questionnaire survey, and described the characteristics of medical behavior under the anger emotion through statistical analysis. Results: Gender has a significant impact on refusal (P<0.05)and inward outbreak of resistance(P<0.05).The degree of education has a significant impact on outbursts(P<0.05).The marriage situation has a significant effect on the irrational temperament rationality (P<0.05)and inward outbreak(P<0.05).Occupation has a significant impact the state of anger total score(P<0.01), anger vent(P<0.01), refused(P<0.01), anger vent 2(P<0.01), interpersonal motivation(P<0.05), avoidance(P<0.05), retaliat(P<0.05). Interpersonal violence, anger expression, trait anger, state of anger between the positive correlation. Conclusion: Anger will reduce the quality of medical care, inducing anger, threatening the physical safety of both doctors and patients. Reducing the adverse effects of anger, which need for doctors, hospitals, patients to take measures together.