This study aims to producedesign of learning materials based on Multimedia to increase the language ability of autism children class 1 SLB, which adjusted with the needs analysis of autism children in Special Schools Mandara 1 and 2,KotamadyaKendari. Design of learning materials based on Multimedia to increase the language ability used qualitative and quantitative approach with Research and Development method (R&D). The sample of study was divided into two stages, the first stage were 2 studentsof autism children who had medium levels of autism disorder and 2 teachers.The second stage is model development,implemented by analyzing the needs from 4 teachersand material feasibility analysis which has done from 4 teachers who taught in autism class. The results of this study conclude that (i) ) the content of learning materials based on need analysis of Multimedia must contain the language components ie alphabet, word, syllable and a combination of simple words (phrases) which was integrated into supporting media, this result was proved by total average value 4.22 in ?very high? category, (ii) the previous of used learning materials still has lack from material content feasibility aspect, the material accuracy, the use of language, the layout on teaching materials and the completeness of material support which is still limited, This result showed that the average value in ?fairly high? category, it was 2.81.