Emerging from 70s of twenty-first century,Voluntourism develops into a travel form integrated with volunteering,ecotourism and cultural tourism after forty years and it gains popularity in developing countries and districts.The main theories on Voluntourism motives,experience and impacts are elaborated by recompiling and concluding the early and lately research.Moreover,some new trends on its approaches,fields and subjects are pointed out to offer research framework and promote the domestic Volu...