Purpose: The purpose of this paper was to explore the content of sports improvement control and to develop a reliable and valid scale regarding sports improvement control. Method: With literature review, the questionnaire of sports improvement control was conducted first. Then, item analysis and exploratory factor analysis were used to examine the CR value and structure of the factors. Finally, the confirmatory factor analysis was used to examine the hypothetical measurement model of sports improvement control. Results: The sports improvement control inventory contained 8 items with three sub-scales which accounted for 50.46% of total variance. Furthermore, the results of CFA indicated that the model of the sports improvement control inventory fitted the data with well construct reliability, discriminate and convergent validity. Conclusion: The results indicated that this scale fitted the empirical research. The sports improvement control could be used in related researches by future researchers.