Since sociolinguistics was introduced into China during the 70's of last century, sociolinguistic studies, especially macrosociolinguistic studies, have made rapid progress in various fields. To illustrate this point, the paper focuses on the status quo of the studies in language identification, endangered languages, bilingualism and professional jargons. The author concludes that China's sociolinguistics is still young and immature, however, sociolinguistics has a vast range of prospects, as the social circumstances of China provide very favorable conditions for its development.