This study was carried out during 2015to determine some chemical Composition of the fruit of some distribution phenotypes of Prunus ursina in different regions of Westrens of Syria. six natural distribution sites were determined(Duerbsndiana-Alnabeen-Alshohtte- Helata-Btmazah-Wadeheleen), and 35 trees were determined as samples. Fruits were harvested and following parameters were determined: dry matter, total acids (T.A), total soluble solids (T.S.S), and total sugar. Statistical analysis of investigated phenotypes showed that There were differences between dry matter, total soluble solids (T.S.S), and total sugar between two groups. the trees were distributed in two groups (A, B) .The results showed existence of most trees in whole sits, while (J6 and KA6) were distributed in two different sits(Btmazah and Duerbsndiana) .