The goal of this study is to determine interior pathogen that causes Diarrhea state to chidren between (1-15) years old, theirs patient from (learn hospital of alemamen alkadoman) in the city of Baghdad from 25/4/2014 to 1/10/2014 period of time, the study represents 103 sample of stool, the result represents that highest ration of infected by 48.545%, Rotavirus 39.80%, mix infected(parasite + Rotavirus) 8.73%, with record of lowest infection ration 2.91%, found during the study that the age group 1-5 years showed the highest percentage of injury Rotavirus by also reached 60.98% case common injury (Rotavirus and parasitic) where this age group, the highest recorded percentage of injuring 66.67%, As for parasitic infected which represented within the same category %26. The results showed that age group (more than 5 years) and deity 56% when compared with the other groups and recorded the results .There is a high significant difference between males and females in the pathogenesis of parasitic and viral infection when the probability p < 0.01, male recode (62.00-60.00)% more than female (40.00-38.00)% on serias.