This paper mainly researches on the principles which guide the formation of the numerous and complicated intemet lan- guage.By studying the methods of intemet language formation (abbre- viation,old expression with new meaning,Arabic number code,emot- icons and bilingual code) and analyzing the age and educational back- ground of the netizens,the author demonstrates the formation of the in- ternet language is guided by these two principles:saving keystroke principle and showing individuality principle.And as the author is a Chinese student majored in English,beth the Chinese and English in- ternet language sources will be studied. This paper mainly researches on the principles which guide the formation of the numerous and complicated intemet lan- guage. By studying the methods of intemet language formation (abbre- viation, old expression with new meaning, Arabic number code, emot- icons and bilingual code ) and analyzing the age and educational back- ground of the netizens, the author demonstrates the formation of the in- ternet language is guided by these two principles: saving keystroke principle and showing an individuality principle .And as the author is a Chinese student majored in English, beth the Chinese and English in- ternet language sources will be studied.