Introduction: One of the most important health problems of the country is parasitic infections, specially intestinal parasites which have relatively high prevalence rate through out the world. These infections can cause iron deficiency anemia, physical and mental retardation among children and family members. Since, mothers come to account as the base of the family and each their deviation of health can consider as a risk factor for them and the other family members, this study was conducted to determining prevalence rate of intestinal parasitic infections among mothers and associated demographic factors.Material and Methods: This survey is a descriptive analytical study which cross - sectionaly was done based on systematic randomized sampling method on 1650 Mothers in three regions of the town. Their faces were examined three times by formalin ether concentration technique. Of course for gathering data about demographic factors, questionnaires, were filled all infected mothers.Results: Of 1650 case, 801 mothers (48.5%) were infected by intestinal infections: 110 mothers (% 13.73) were infected by pathogenic intestinal infections; Giardia Lamblia 89 case (%5.39) was the commonest infection, Entamoeba histolytica 12 cases (%0.72), Hymenolepsis nana 5 cases (%0.3), Ascaris 3 Case (%0.18) and tenia Saginata 1 cases (%0.6) respectively. 691 mothers (%86.2) were infected by nonpathogenic intestinal infection; E. Coli 313 Cases (%19), Blastocrstic hominis 267 cases (% 16.18), Endolimax nana 67 cases (%4), Iodamoeba buetschlii 34 cases, (%2) and Chilomastix mesnili 10 cases (%0.6), respectively.Conclusions: In this survey, there was no significant relationship between infection rate and demographic factors like age, job, level of literacy and residence region. However, the findings showed that the highest rate of pathogenic intestinal parasitic infections were %7.8 (43 cases) in down town, %6.72 (37 cases) in town center and %5.45 (30 cases) in uptown.