This study analyzes graduation theses of undergraduate Japanese majors in China (hereafter referred to as “Japanese majors”) with the aim of probing into how Japanese majors are using citations in their academic writing. The results of the survey show the following tendencies: 1) Japanese learners' citation density is low; 2) Japanese learners' citations from less academically published sources, even unknown sources are not rare; 3) Japanese learners tend to use indirect citation rather than direct citation; 4) Many citations with the reference mark of “author’s family name plus publication year” are found, and citations with only annotation or reference serial number are few. Secondary citations are also found in Japanese learners' writing; 5) Japanese learners prefer to use "Noberu" as the citation verb, also with a tendency of overgeneralization of past tense in citation verbs; 6) Japanese learners cite more in the introduction.