Abstract
This study investigated the effect of methanolic extract from the fruits of three types of palm tree plant growing in the southern regions of Libya on three types of bacteria Escherichia coli, Salmonella typhimurium, Staphylococcus aureus. Eight antibiotics were used from different functional groups as a control, The results showed that the extract of Tafsirt was the most effective effect on the bacteria but did not have any effect on the bacteria Salmonella typhimurium, While the extracts of Aspare and Talis did not show any effect on the bacterial isolates compared to antibiotics, the study indicates that the diet rich in Tafsirt date will cause a preventive and partial therapeutic effects of the dangers of bacteria that infect the digestive system.