Researchers have explored many topics of speech perception development, from assessing whether newborns were able to distinguish speech sounds of native and foreign languages to investigate whether school-aged children with language-related impairment experienced any speech processing difficulties and adversely affected the development of language. Developmental mechanisms of speech perception included, listening experience with the native language, statistical learning and social interaction. Studies have not only documented the developmental path of speech perception from newborns to middle childhood, but also provided critical evidence to examine basic issues of developmental psychology, such as the initial state of mental development and effects of culture on development. This paper reviews thesis and journal articles published between 2000 and 2012 by Taiwan researchers on speech perception development and organized in two topics. First, we review studies on speech perception development in typically-developing children, especially focused on the developmental mechanisms and the perceptual develop ment of “lexical tones,” the unique phonetic unit in tonal languages. Second, we review speech perception studies on Mandarin-speaking children with language impairments, including hearing-impairment children with cochlear implants, children with specific language impairment, and children with reading impairment. In conclusion, studies on speech perception development in Taiwan has kept pace with current research trends in the western world and provides evidence to examine issues of language-specific influences on speech perception development. Issues for future studies are discussed.