Language acquisition is a complex process that relies on biological, cognitive, psychological, and social aspects favorable to the construction of functional language. However, if there is structural or functional impairment during the language acquisition period, there will be damage to the child’s global and cognitive development. The purpose of the study is to describe and present the different characteristics of language disorders in patients with mild or moderate Autism spectrum disorder (ASD) and mild or moderate Intellectual disability (ID). It is a cross-sectional and analytical study, for language assessment, we utilized the Language Development Protocol (ADL 2), which analyzes Receptive Language (RL), Expressive Language (EL) and Global Language (GL). Convenience sampling consisted of 11 participants, users of the CERIV/APAE assisted in the speech therapy sector. Through this study, we evidenced the implications entailed by language disorders for the global functional development of patients with mild or moderate ASD when associated with mild or moderate ID.