Today, the development of tourism has become an important tool in development of rural areas and has achieved a suitable place in rural development researches. In this research we try to study the economic, socio- cultural and environmental effects of tourist’s entrance in Kahman’s rural area. In this research mixed methods of quantitative (questionnaire) and qualitative (observation, interview) are used. In survey between 257 families, 166 people are selected and in part of qualitative research (interview), theoretical saturation is achieved. With using a theoretical approach of research, the findings show that tourists’ entrance has a significant and positive economic, socio-cultural an environmental effects on Kahman’s rural area. Findings also show that, with systematic planning and participation of Kahman’s people in tourism part can have positive economic, socio-cultural and environmental effects. Economic part, create new jobs, decrease unemployment and increase income, and socio-cultural part because increasing of communication and common awareness of rural people. Also In environmental part increase expectation and awareness of rural people related to environment supporting. With sewage system in this area, we can say that tourism in Kahman area could increase attractiveness to this area and in economic part could mobilize this area with none agricultural income and from the view point of socio-cultural part, create relation with other and among them with other fields of socio-cultural relations. Also in environmental part, it increases the sensitivity of local people to the environment because they know the environment as best source of themselves in future.