Memetics is a brand-new theory on the basis of evolution theory put forward by Darwin and it is used to ex- plain cultural evolution.The meme is of great importance in the development of network language.Its replication and transmission provide a quick and effective way to enrich network languages.This paper introduces the concept of memes and investigates the memes in network languages at the same time.According to the life circle of memes,this paper ex- plains the reason why idioms,proverbs,common sayings,famous remark and classic poems become memes in network languages successfully.Genotype and phenotype of network languages are als9 analyzed.Based on an analysis of the memetic phenomenon in network languages,the author tries to offer some hints and references for creating powerful memes in the development of network languages.