Abstract
Capparis spinosa is an effective wild medicinal plant in antibiotics field. Three extract methods aqueous, methanol and ethanol of growing seeds plant located at the Anbar desert were tested to inhibiting the growth of four species of important medical bacteria Staphylococcus aureus, Escherichia coli, Bacillus subtilis and Pseudomonas aeruginosa. The results showed that the methanol extract was effectively inhibitor of C. spinosa the growth of all bacteria growth subjected to study while maximum inhibitory effect against B. subtilis was found by 24.8 mm greater inhibition zones followed by E. coli by 17.2 mm and the effect of ethanol extract C. spinosa inhibition of bacterial species was greater in B. subtilis (18.8 mm) followed by E. coli (12.7 mm). The effect of C. spinosa was the highest effect in B. subtilis and E. coli and was 11.7 and 16.8 mm respectively.