This paper aims to report on the results of a student attitude survey for English vocabulary learning. To increase the size of their vocabulary, all students at National Institute of Technology, Kisarazu College (Kisarazu Kosen) are using "COCET2600" as a learning material. As it is difficult to teach vocabulary effectively in a lesson environment, students have to learn by themselves outside of the classroom. Although a few students can use "COCET2600" effectively by themselves, the majority of the students cannot use it in an effective way. Therefore, the author conducted a survey of students on vocabulary learning using "COCET2600". From the results of the questionnaire survey, the author will indicate the following three points; (1) students attitude toward vocabulary learning, (2) effectiveness of using "COCET2600" by students, (3) differences of awareness and learning forvocabulary leaning in lower grade students and upper grade students.