The purposes of this study were: Informing some Species of wild plants at Debah site of Hama, and knowledge of its importance in rural development in the region. Our survey indicated for 2011-2012 that Debah site is a rich region in plant biodiversity, Results revealed the presens of /145/ species, which belong to /89/ plant genus and /29/ different families. Poaceae, Asteraceae and Fabaceae families are the most important families in the study site. It was found that the region include numbers of plant species that have different avails, and some informions of plant avails were collected through knowledge of local people and were comparised with scientific references , The knowledge in biodiversity benefits of local people has effected by many factors: age – experience– porerty . The oldest people who has an experience know a lot about biodiversity and their benefits and the starkest villages know more than the poorest ones .