This paper aims to assess the current situation of cooperative skills education for 5-6 year-old children with autism spectrum disorders (ASD) through play activities at some kindergartens in Son Hoa district, Phu Yen province. Lessons can be learned for teachers in the process of cooperative skills development for autistic children in integrated kindergartens. The results of theoretical research and the situation indicate that 1) Understanding the thoughts, emotions and attitudes of others, knowing how to express their emotions, and behaving in accordance with certain circumstances and situations are the difficulties that closely attach to ASD children; 2) ASD children perform better when playing alone than when cooperating and sharing with other children; 3) Children need to be reminded and supported by adults when playing with a group; 4) Teachers adapt a variety of play activities for the best educational effectiveness; however, outdoor activities prove to be most effective; 5) Play activities in kindergarten plays a major role in the development of cooperative skills for children, so the development of co-operative skills for children through play activities should be quickly implemented; 6) Focus should be put on engaging children groups in inclusive classes to support the collaborative skills education for ASD children.