This study, based on the research literature on the cognitive oral language of hearing-impaired children from seven top journals involving special education, psychology and linguistics between 1995 and 2014, as well as a statistical analysis of their quantity, researchers, the nature of the research topics, research methods, and the research outcomes, summarizes the new developments in the research into the cognitive oral language of hearing-impaired children during the past two decades. In conclusion, the study offers proposes for the current ...