An important factor to enhance the ability of companies, particularly in developing countries, to obtain knowledge and technology and out of low-value problem of the industry, is technological learning. The aim of this study is to identify and prioritize internal factors affected technological learning. Group decision making is managers and experts involved in the development of technology in industrial engineering units of Mobarake Steel Company that are 11 person. In this research for identifying and screening the most important factors affecting technological learning, Fuzzy Delphi technique is used that five factors, “ R&D capability” , “ manufacturing capability” , “ motivation system” , “ education system” and “ absorption capacity” were identified between nine factors then for separating sub factors to cause and effect and prioritizing them, Fuzzy DEMATEL is used that the sub factors of “ supported top management” , “ capability of human resources” and “ formal and informal education programs” are placed in the first place to third. the software Excel and MATLAB for data analyzing are used. After the results are diagnosed reasonable and logical by experts, some strategies are also presented to apply this factors and accelerate technological learning.