The infestation with amoebic dysentery and giardiasis in the intestine play an important role in the human health deficiency in Al-Najaf since the infections may lead to gastroenteritis in human. To learn about the range of extending amoebic dysentery and giardiasis in people ( male and female ) which their ages range (1-50 ) years old this study was established for 7 months (January 2018  to July 2018) in  Al-Najaf. A total of 377 patient examined  in this study,119 infections Giardia lamblia and 258 infections Entamoeba histolytica, Results indicated that the highest infection was 16.3  in age range (31-40 ) in male patients infected with giardiasis,  and in amoebic dysentery also the highest infection was 17.8  in age range (31-40)  in  male . its referred that no significant differences between Entamoeba  histolytica and Giardia lamblia  according to age (31-40)  in  male. As The results indicated that the rate of infection in males is higher than females in all age and in both parasites. The results recorded the highest rate of infection in both parasites during the months of the study  in July reaching 12.9 in Giardia lamblia and 19.2 in Entamoeba histolytica , This is evidence of significant differences between Giardia lamblia and Entamoeba histolytica in infections during the months of the study, Where the rate of infection was increased in the amoebic dysentery reaching(16.3 in April),(19.4 in May and June) and (19.7 July ) respectively.