Objective　To explore the relationship between parenting stress and parenting sense of competence in children with intellectual disabilities. Methods　Parenting stress index-short form (PSI/SF) and parenting sense of competence(PSOC)were used to measure 238 intellectual disability children's fathers and mothers. Results　The parenting stress coming from the boys' fathers was significantly higher than that of the girls' fathers, while there was no significant difference between the parenting stress coming from the girls' mothers and the boys' mothers. The satisfaction of parental competence coming from the girls' fathers was significantly higher than that of the boys' fathers. The efficacy of parental competence coming from the boys' fathers was significantly higher than that of the girls' fathers. Parenting stress could significantly negatively predict the parental competence in parents of children with intellectual disabilities. There was a cubic functional relationship between parental parenting stress and the efficacy of parental competence. Conclusion　Reducing parental stress can enhance parental parenting satisfaction and efficacy.