Nativelikeness is the end state of the second language acquisition. Few researches have tackled the issue of concreteness in L2 processing from the perspective of nativelikeness. A word association test was conducted in this study to explore whether the concreteness has significant effects on the association proportion and the inactivated responses of L2 learners. The results showed that the association proportion of concrete words is significantly higher than that of the abstract words; and, referred to the results of native speakers, the concrete words had few inactivated responses than those of the abstract words. The results suggested that the development of concrete words was faster than that of the abstract words in the process of nativelikeness, which provided new evidences for the dual-coding theory and the context availability model.