Abstract: Based on the data provided by the Office of College Japanese Tests Band 4 and Band 6,this paper fo- cuses on the vocabulary part of the College Japanese Test 4 and analyzes the difficulty degree,distinguishability, and mistake rate.By observing the typical successful and unsuccessful test questions in an effort to make a scien- tific analysis and research,this paper offers objective and just comments on the vocabulary parts.Hopefully,the present situation of Japanese teaching will be accurately and objectiv...

Key words: CollegeJapaneseTestsofBand4, vocabulary, reliability, validity