Integrated pest management is one of the sustainable agricultural strategies. IPM encompass the total package methods to control or manage pests and disease in crops. It provides a system approach to pest management and decrease pesticide using and it uses sustainable method. Farmer’s participation is the key of IPM success and can help obtaining sustainable agricultural. It needs to detect the barriers of adopting integrated pest management. This research was done with aim to study the barriers of adopting integrated pest management in Iran. A questionnaire was used to collect data. For determining the validity of questionnaires, the content validity was used. Cronbach's alpha was used to measure reliability of the instrument, which was 95.9% and showed the instrument reliability. SPSS/Win software was used for data analyzing. This research studies 68 farmers that attending IPM classes. The firstpriority of barriers to adoptionintegrated pest management in Iran is “lack of farmer's assurance to control pests with pest management methods”. The lastprioritization of barriers of adopting integrated pest management in IRAN is “lack of government's support for integrated pest management methods”.