This study attempted to search the nature of language development and the relationship between vocal development and motor development in infancy, and it relied on the descriptive and qualitative approach and the method of content analysis to review and compare three researches related to the relationship of language development and physical development during language learning in the infancy. The results of the three studies, despite some difference between them, indicates the relationship between sound, movement, and body signals before, during and after language learning in infancy