Starting with general and special concept of dialect, the dissertation introduces the concept of social dialect which is discussed in both sociolinguistics and urban dialectology. 本文從方言的廣義及狹義概念入手,引入了社會(huì )方言這一社會(huì )語(yǔ)言學(xué)及都市方言學(xué)都會(huì )涉及到的概念。