This study investigates whether formulaic sequences’ frequency and the language proficiency of EFL Chinese learners would affect the holistic representation and access of formulaic sequences in the L2 mental lexicon Two groups of subjects with different levels of English proficiency were chosen, and they were asked to complete a reaction time task and a L2 frequency checking task Eprime software and Praat (version 4304) speech analysis software were adopted in the present study The findings revealed the effect of frequency but they did not show the effect of language proficiency in the holistic status of formulaic sequences in the L2 mental lexicon