The purpose of this study was to investigate the university students\' attitudes toward the augmentative and alternative communication(AAC) use in children with severe mental retardation. One-hundred-four university students who major in rehabilitation science or special education self-administered questionnaires on the necessity, the awareness, and the importance of AAC use. The frequency analysis and the chi-square test were used to analyze the trend and the differences among groups of different gender, areas of study, years in the university, experiences of interacting with people with disabilities, training in AAC classes, and practical training experiences. The results of the survey show that overall awareness about AAC use was lower than the subjects\' perceived necessity of AAC methods. The rated importance of the AAC use by the subjects were high in all survey items. Students who had attended AAC classes and had practical training experience showed more positive attitude to the AAC use. The results of the present study suggest that the professional AAC curriculum development along with practical training is an important factor in promoting public awareness on the AAC use for the people with disabilities.