Based on narrative writings and argumentative writings written by 66 intermediate Chinese level South Korean students,we explore if there are any significant differences on language complexity,accuracy and fluency between the two genres.The results show that,(1)in terms of the lexical diversity,argumentative writings are higher than narrative writings about people but show no significant difference from narrative writings about scenery;(2)on the lexical complexity,argumentative writings are higher than the two kinds of narrative writings;(3)on the syntactic complexity,argumentative writings are higher than both kinds of narrative writings on T-unit length,are lower than narrative writings about people on the number of topic chains,the total clause number,and null forms,but show no difference from narrative writings about scenery on the three measurements;argumentative writings are significantly lower than narrative writings about scenery on the total number of complex noun phrases,the ratio of complex noun phrases,and the total length of complex modifiers before nouns,but show no difference from narrative writings about people;(4)in the light of language fluency,argumentative writings produce significantly more characters and use more time than narrative writings,but the average characters per minutes are similar;(5)on language accuracy,there is no significant difference between the two genres on the dimensions of characters,vocabulary and grammar.We analyze and explain the linguistic features of two genres and provide suggestions on writing teaching for intermediate Chinese level students.