Abstract-The present study is a corpus-based study which aims to investigate the occurrence of salient first language (Chinese 1 ) features found in learners' second language (English) written productions. AntConc (version 3.2.4) was adopted to analyze the learners' written data and to establish various categories of preposition misuses and L1 features. Tango 2 was employed to provide suggestions for correction. Essentially, findings demonstrate that EFL learners may unconsciously produce L2 writings with L1 characteristics in their sentence productions. Results showed that the ten most frequently misused prepositions were by, at, in, to, for, on, about, of, with, and as. According to the results, it is suggested that, in regard to writing, teachers and educators can teach the use of prepositions through collocations to facilitate learners' knowledge and understanding for different prepositions through different contexts. The significance of the study is to raise learners' awareness as well as to provide reference for instruction for language teachers and educators.