Abstarct: In the era of electronic communication and information, any organization of any size, facing with a rapid change environment and must to plan and manage their activities so that success in the Stormy external and internal environment affecting factors and highly competitive market and survival is. According to the concept of strategic planning, this requires effective utilization of strategic planning. Because on the one hand the prospective of future developments, and with prediction future changes appropriate measures will be set on the other hand, is influenced by environmental factors affect and its close relationship with, From this point of view can quickly become aware of environmental changes and respond appropriately and quickly to show and the more effectiveness it will . Strategic planning is capacity management tool that is designed to help large and small companies to adapt to the more competitive environment and the anticipated changes. In particular, the process of strategic planning provides an attitude and analysis from organization and its relevant micro and macro environment (PEST),and Explains the current situation of organization and identify the key factors affecting the success of its. Strategic planning instrument sets objectives of organization according to its mission and through environmental studies, identify the opportunities and threats and strengths and weaknesses so from this way a more realistic goals set and plans to implement. Use a long-term strategic planning by managers can create positive results for organizations. Therefore, in this study,try to analyze the gap between strategic planning from design to implementation with a new approach Addressed to the effectiveness of the program and by independent comparison mean test (T test) to determine which of these gaps to the environment and why it is . The population of the study and samples were randomly selected branches of Mellat Bank in Tehran