To minimize the referral of special education in school ages, the importance of early integration for young children with disabilities was suggested. This study was implemented to provide early childhood special teachers and families of young children with disabilities with the information to accomplish the successful transition to regular preschool program. Questionaries to know what the critical skills to transit from early childhood special education to early childhood education and the prerequisite elements to facilitate successful transition were carried out by 218 early childhood teachers who would take the major instructional role in integrated program. The results showed that early childhood teachers rated classroom-adaptive and social skills more important than cognitive skills. And they thought that it was tasks to solve immediately-the promoting their ability as educational professionals, developing positive perception about integration, and establishing the supportive personnel system. Based on these results, future suggestions were discussed.