The researchers aim through the current research through their investigations to verify the relationship and impact of the core capabilities as an independent variable in the development of functional performance as a responsive variable, in the tourism authority of the city of Baghdad, and to try to come up with a set of recommendations that contribute to the promotion of the practice and adoption of the two variables in the body under study, and based on the importance of the subject to the research community and its fundamental impact in their activities and services, has been based on the descriptive analytical approach in the completion of this research, including the research community (from the Director General and his assistants and heads of state). Departments, department heads and people's officials in the Tourism Authority) where the researchers distributed (119) the identification of the research community, and provided them with interviews and field observations as tools to strengthen them. the research adopted the program (Spss V.25, Amos V.25) with the adoption of descriptive and inference statistics methods (linear testing, natural distribution test, emphasis analysis, structural model, computational medium, percentages, The standard deviation, relative importance, the coefficient of variation, the Pearson correlation coefficient, the simple regression coefficient, the track analysis, and the Sobel test) concluded to test its hypotheses, and the study concluded to highlight its conclusions that showed the validity of the hypotheses represented by the direct impact of the intrinsic capabilities in the development of functional performance.