Discourse markers are an indispensable part of any coherent discourse. The present research seeks to investigate the difference in the use of inferential discourse markers in English writing between Chinese EFL learners and native speakers based on corpus data. The materials used are taken from TECCLv1.1 and NESSIEv2. Quantitative analysis suggests that Chinese English learners use slightly more inferential discourse markers than native English speakers in general in written English and tend to overuse certain contrast words while undersuse some others. Possible causes are discussed and some suggestions are offered for the teaching and learning of English in China.