With the development of networking media, “准”in modern Chinese not only as a morpheme of word formation combined with other morphemes, but also as an affixoid to form a large number of new words in the form of “准X”. Firstly, on the basis of previous studies, this paper explores the morpheme meaning of “准” and its development through the investigation of five dictionaries. Secondly, a total of 4000 “准X” corpuses are selected from BCC corpus, and 144 “准X”words which meet the semantic requirements of “准”affixoid are selected by combining corpus intelligence statistics with manual analysis. This paper classifies 144 “准X”words and investigates the syllable composition, morpheme composition and the internal relations among morphemes in the “X” part. It also examines the structure, meaning and characteristics of the word “准X”as a whole. The word “准X” has five characteristics: Firstly, nouns referring to people are dominant. Secondly, Most words have the nature of spoken language. Thirdly, there are some words combined with network neologisms. Fourthly, there are some words combined with other affixes. Fifth, there are professional terms in a certain field. Finally, this paper analyses the motivation of the emergence and development of “准X”, which can be divided into internal and external motivations. Internal motivation is mainly the concreteness and diversity of meaning, as well as the productivity of word formation. External motivation includes two aspects: the need to express new things and new ideas and the exchange of different cultures.