Pathogenic germs have developed an increasing resistance toward many antibiotics which form a true problem for human being ,because these germs can transport to him by many ways such as water ,food and air that may cause many dangerous diseases to human being. The aim of this study is to investigate the effectiveness of extractions prepared from different parts of the flowing plants: Olea europea Linn(Oleaceae) , Myrtus communis Linn(Liliaceae) ,Majorana syriacus Linn (Laminaceae), Zingiber officinale Linn(Zingiberaceae),and Achillea falcata Linn(Asteraceae), against Pseudomonas Aeruginosa.