Organizations have been trying to achieve their goals considering the internal and external environment conditions, parameters and variables. For this reason, the management activities have been performed by a strategic approach at the organizations. Different analyses have been made in the strategic management process first stage. Main reason of this is difficulties of the explanation completely and detailed of strategic analysis stage in the organization. Primary purpose of this study is to carry out the strategic analysis based on the internal environment. In this study strategic analysis was conducted on sectoral basis and by an integrated approach. Analysis unit of the study is Turkey tourism sector. Content of this study is limited by the internal environment of the Turkey tourism sector. Firstly in this study the vision's components of Turkey tourism sector were determined by the content analysis. Then, the weights of the components were calculated. Weights of the internal environment factors that are strengths and weaknesses were determined according to the components of vision. In addition to these analyses the present state of each internal factors were evaluated by the scale that was consisted with fuzzy numbers. Finally the present level of each internal environment factor was calculated as separated and whole. In the result of the study tourism sector were evaluated by the strategic and integrated approach with fuzzy numbers.