Introduction: Hospital is one of the most important parts of a health- providing network which requiring an experienced and efficacious managing system thus A weak managing system would result in increase in expenses, loss of economic sources, and decrease in optimal usage. Therefore current study has performed to evaluate the association between leadership styles of managers and conflict management method in Sepah Health and Treatment system.Methods: Current survey is an observational analytic cross-sectional prospective study. Our sample population consisted of 48 high and middle level managers of some Hospitals who were selected during a census. We used both leadership style and conflict management inventories to collect are required date. Statistical analysis has performed by SPSS software using Chi-Square and ANOVA methods.Results: About leadership method, our results indicated that 62.5% of managers had tendency to favoritism while 20.8% were conscientious, 16.7% were socially independent, from the point of conflict management method, 4.2% had tendency to anti-conflict approach, 50% had tendency to solving-problems method, and 45.8% had tendency to applying control method. There was a significant relationship between age and managing methods same as between history of management and Managing methods in the other hand there was a significant difference between managing method and solving-problem approach.Conclusion: Our results indicate that majority of managers with every leadership style along with increase in age and record of service and experience, would attend to use of solving-problem method in conflict management and also to favoritism method of management.