Purpose: We investigated changes of motor skills development in children with developmental coordination disorder (DCD) after participating 12-week intervention program to promote their fundamental motor skills. Methods: The movement assessment battery for children-2 (MABC-2) was used to screen DCD. Ten children with DCD participated voluntarily in an after-school program 3 times per week for 12 weeks and were examined using the MABC-2 before and after the intervention. The program was planned to facilitate fundamental gross motor skills based on physical education curriculum for public school and their daily life. Results: After the intervention program, DCD children showed a significant improvement in aiming and catching, and balance. The total percentile score of DCD children after the intervention was significantly improved and marked higher than 16%, thereby indicating an improvement in their motor development after the program. Conclusion: This current study supports possibility to improve motor coordination of children with DCD with respect to fundamental motor skills. 12-week intervention might be effective to increase their score of MABC-2 from motor delay level to typically developing level.