Object of study: professional thinking person.Subject of investigation: psychological peculiarities of professional thinking individual in the system of internal affairs of Ukraine.Methods: To address the research objectives and to ensure objectivity in the study used a number of general and special methods. 1. Methods of data collection: theoretical methods - theoretical analysis of expert sources, systems analysis and interpretation of data, classification, modeling study and synthesis of experience, empirical methods - the methods of monitoring, modeling, analysis results, psychodiagnostic methods, "Research rigidity of mental processes A . S.Lachynsom "" Intellectual lability, "" Quantitative Relations, "" Investigation of productive and reproductive thinking "," icon "," free association test, "" Verbal patterns "," search patterns ", Brunner method," Thinking Types "(K.Skolyanyk)," Practical thinking adults "(M.K.Akymova etc.). questionnaire" Diagnosis typologies psychological defense "(R.Plutchik to adapt L.I.Vassermana etc..)" way of thinking "( adapted version of the questionnaire InQ R.Bremsona and A.Harrisona (translation and adaptation O.O.Aleksyeyevoyi), "The style of self-regulation of behavior" (SSP) V.I.Morosanovoyi, "free sorting objects", "Comparison of similar drawings"; "Figures Hotshylda", Stroop Test, Test Raven, "imaginary movement» (Klein, Gardner, Schlesinger); Methods of assessing the size of the circle in a distracting noise "Constancy circle» (Gardner, Holzman, Klein, Linton, Spence); «Prognostic task "(L.Rehush, N.Samova)," The ability to predict "(L.Rehush) questionnaire Dzh.Rottera" The level of subjective control, "" Emotional Intelligence Questionnaire "D.V.Lyusina.2. Methods of data: qualitative - methods of analysis, synthesis, comparison, and b) quantitative - Methods of statistical analysis. 3. Interpretive methods: a structural way in the interpretation of the results, which enabled the comparison of the data.The research work was carried out at the Donetsk Law Institute Luhansk National University of Internal Affairs behalf E.O.Didorenka, Odessa State University of Internal Affairs of Ukraine, the Main Department of Internal Affairs of Ukraine in Donetsk region Makeevsky MU Internal Affairs of Ukraine in Donetsk region.Scientific novelty of the study is that first time: Peculiarities of formation of professional thinking university students and staff of Ministry of operational units ATS Ukraine on senzytyvnyh stages, conducted a comparative analysis; A model of professional thinking staff carries out the ATS Ukraine, the stages of its formation and development; The concept of professional thinking and its components; Were further developed recommendations for the establishment of university students thinking MIA and development of staff in operational units ATS Ukraine.The practical significance of the study. The data on the peculiarities of professional thinking police employees operating units Ukraine introduced in teaching lectures and practical courses for professionals and Masters by subject: "Legal Psychology", "Differential Psychology" in Odessa II Mechnikov National University (act number 10 implementation from 10.05.2011r.) "Practice of General Psychology" for student lawyers in Makeevskom Economics and Humanities Institute (Implementation Act number 14 from 25.09 in 2011), the work psychologists Research Center psyhotreninhovyh technologies in Donetsk Law Institute of Ministry of Internal Affairs of Ukraine ( Implementation Act number 14 from 25.09 in 2011).Scope institutions of higher education, psychological services.