In our lives, we are constantly faced with difficult and difficult problems in decision-making. In order to overcome the problem effectively, we need to make the right decision. Many factors affect decision-making. Researchers have determined that personality differences or personality types can affect these. Depending on the personality types, the time to decide and the approach to it differ. When making decisions, the personality types that are necessary when determining the goals and objectives of a person's actions and activities and making a choice are affected. There are studies that have studied decision-making styles at the level of leaders, but they have rarely been studied in relation to their individual characteristics. The reason for conducting this study on doctors is that they interact with people every hour and minute and work for the most precious thing, which is health. They also have a very stressful job and face a lot of problems. One wrong decision or one wrong step can cause great harm. Therefore, it was considered necessary to determine the characteristics of problem-solving and personality types of these professionals. A total of 300 doctors working in Mongolian state hospitals were randomly selected and the results were presented. The results of the study showed the relationship between problem-solving characteristics and personality types. In terms of viewing, the characteristics of vigilance, critical external environment (0.289**) and receptive external environment. There was an inverse correlation with the (-0.289**).