The present study was carried out in 2004/ 2005 – 2005/2006 seasons to make survey of plant vegetation at Wadi Wateer  (East southern of Sinai) (a bout 100 km length) at 9 successive sites. The study was carried through two years (two wet and dry seasons) to evaluate the vegetation structure throughout 20 chart quadrates (2 m x 2 m) at each site. The results showed that most of the pasture measurements such as plant density (plants / 4 m²), coverage %, frequency %, abundance % and fresh, and dry yields (ton/fad.) reached its maximum values during the wet seasons. Sites 5, 6, 7, 8 and 9 were more suitable for growth of the plant associations than other sites under studies. Many plant species such as Astragalus  spinsous, Medicago laciniata, Artemisia Judica, Artemisia monosperma, Legum spartum, Haloxylon salicornicum, Calotropis procera, Lycium shawii and Paronychia sinaica were capable to grow under the aridity conditions at Wadi Wateer  area.