Introduction: Enuresis is one of the most common childhood problems. When the diagnosis of enuresis is that involuntary passage of urine is at least twice a week for 3 consecutive months and chronological age is at least 5 years. The purpose of this study was to determine parents' opinions about affecting factors on children enuresis.
Methods: This is a descriptive - analytical study. The study samples included 200 parents (100 parents with son and 100 parents with daughter) 6-12 year children referred to special clinic of one of teaching hospital affiliated with Ahvaz Jundishapur University of Medical Science are that were selected by available sampling.
Results: Based on the criteria of DSM-IV from 200 children studied, 64 children (32%) have nocturnal enuresis. Statistically significant difference were observed between genders (p=0.002), family history (p=0.004), deep sleep (p=0.005), high fluid intake (p=0.00), also enuresis Statistically significant difference between enuresis with parents' education level, income, number of family members, ranking birth, history of injury and hospitalization, birth of a new baby, relocation, problems at school and home and Snoring and mouth breathing, urinary tract infections and constipation were not observed (p>0.05).
 Conclusion: According to results of this study the majority of children with enuresis had positive factors such as family history, high fluid intake and deep sleep. So it is necessary to implement group education for families, they can be Enable to overcome the problems of children.