This study was to examine the degree of depression and parenting stress appeared among mothers parenting their children with intellectual disabilities. Parenting Stress Index-Short Form (PSI/SF), Korean Beck Depression Scale (KDS) and other general scales were distributed to 80 mothers of children with intellectual disabilities living in G metropolitan city, which results were analyzed using SPSS 18.0. The results of this study were as follows. First, the higher their children’s age and the degree of children’s disabilities was and the severe the mothers perceive about their children’s disabilities level, the higher the stress of mothers of children with intellectual disabilities was. Second, the depression in mothers of children with intellectual disabilities was higher in mothers of children between 4 and 6 years old and in contrast to parenting stress, the lower their children’s age was, the higher the mothers’ depression was. The severer the children’s disabilities were perceived by the mother, the higher mother’s depression was and the lower the age of mothers was, the higher their depression was. When raising children without anyone’s help, the mothers’ depression was also high. This study has significance in that it examined the parenting stress and degree of depression appeared among mothers parenting their children with intellectual disabilities and it can be used as basic data for developing future disabled child parenting program and parent education program.