The purpose of this study is to find out the effects of inclusion in child care center for disabled children diagnosed by language disorder, intellectual impairment, and pervasive developmental disorder. The results of this study are as follows. First, all disabled children have enhanced their abilities through inclusive programs in child care center assessed by K-CDI and IEP assessments. However, autistic children have difficulty in contacting with peers and others, and that might contribute to their failure to understand the emotional states of other people. Second, most of all, IEP is necessary to meet the disabled children's special needs by providing systematic education plans, facilitating interpersonal relationship, and improving each children’s impairments.