This research has been done with the aim of determining the effects of investment policies for competitiveness in two qualitative and quantitative sections. In the qualitative part, the variables of the model were extracted through content analysis and semi-structured interviews with 20 steel industry experts who were selected purposefully and theoretically. Then, through a questionnaire, the experts made pairwise comparisons of the relationships between the variables of the model with the comprehensive structural-interpretive modeling method and the hierarchical structural model was formed in the quantitative part. Finally, the structural model created by the structural equation modeling method was validated by the data collected from 144 financial and investment managers of the steel industry. The findings of the qualitative part showed that the created model has 14 variables, which according to the findings of comprehensive structural-interpretive modeling, these variables are located in seven hierarchical levels, so that the three dimensions of "Establishment of standards in the industry", " "Government investment rules and regulations", "Competitive investment strategy" has more influence and guidance, and "Risk management" has the most influence. The results indicate that a higher level of government support and policies can improve the firm's transitory capital, which creates competitiveness, and the importance of these policies was highlighted.