In this study, preference value of range plants in Saraliabad Gorgan region in different season grazing months was investigated by feeding minutes method in 2007-2010 years. In this method, measurement amount of time spent on species grazing by video camera and calculate grazing time percentage for each species. Data were analyzed in the factorial experiment base on complete random block design and Duncan test was used for mean comparison by SAS Software. The results showed that among preference value of species in different season grazing months significantly differed (p