The oral expression has been a difficult area for children with autism. Among a variety of problems in the area, incomplete sentences and atypical speech intonation are two kinds that have been often found, but their remediation has been overlooked. “Su-Lai-Bau” is a kind of rhythmic storytelling to clapper accompaniment. While it is entertaining, providing structure, and involving daily experience, Su-Lai-Bau meets well with the learning needs of children with autism and could be useful on fixing their oral expression problems. Thus, the study aimed to explore the function of Su-Lai-Bau at this aspect. The multiple-probe design across activities of the single subject design was adopted. A 6th -grade child with autism was involved and three of his daily activities (i.e., game activity, drawing activity, and picture-review) were included. The independent variable of the study was the Su-Lai- Bau teaching; the dependent variable was the oral expression performance in terms of the completeness of sentences and the correctness of sentence tail intonation. Three phases-- baseline, intervention, and maintenance, were implemented. Data were collected mainly by audio-taping, 30 minutes for each sampling session, and further analyzed with visual analysis. This study found that the Su-Lai-Bau teaching can improve the oral expression of the child with autism. Main findings from this study are listed below: 1. The Su-Lai-Bau teaching effectively increased both the ratios of the complete sentences and the correct sentence tail intonation of the child with autism. 2. After the withdrawal of the Su-Lai-Bau teaching, the positive effects for the child with autism on the completeness of sentences and the correctness of sentence tail intonation , as mentioned above, were maintained.