Background: Stress is a major problem that human being experiences in their day-to-day life. Stress is a common problem, mothers with Intellectual development disorder children having some stress due to their disability, aimed to investigate the stress and coping among mothers of children with Intellectual development disorder. Objectives: To assess the level of stress and coping among mothers of children with Intellectual development disorder and to find out the association between the level of stress and coping among mothers of children with Intellectual development disorder at Anbaham special school Perambalur. Design: A descriptive study to assess the level of stress and coping. Setting: Anbaham Special School Perambalur. Participants: 30 samples fulfilled inclusion criteria: 30 Mothers of children with Intellectual development disorder were selected by non-probability convenient sampling technique, level of stress were assessed by Cohen's perceived stress scale. Result: Stress and coping of the mothers of children with Intellectual development disorder were assessed. Out of 30 sample the level of stress majority 12(40%) of mothers of Children with Intellectual development disorder children having both moderate stress and severe stress. 6(20%) mothers of children with Intellectual development disorder children have mild stress. In case of coping majority 26(87%) of mothers of children with Intellectual development disorder having moderate coping and 4(13%) of mothers of children with Intellectual development disorder having adequate coping. There was significant association with the demographic variables except for the job of the mothers of children with Intellectual development disorder Chi-square 10.788. It was found that the level of stress for the mothers of children with Intellectual development disorder having both same level of moderate and severe stress and they have moderate level of coping. Conclusion: Mothers of children with Intellectual development children have both moderate and severe stress and they have moderate level of coping.