The purpose of the study was to investigate the effects of engineering design-based instruction (EDBI) on 7th grade students' nature of engineering (NOE) views. Quantitative research to evaluate students' NOE views was operated through a questionnaire which is "Views for Nature of Engineering -Elementary School Version (VNOE-E)" as pre- and post-test. Moreover, quantitative data results were supported by analyzing change on students' NOE views qualitatively. The sample of the present study was 41 students of 7th grade in a public middle school. While 24 students were taught with engineering design-based instruction (EDBI) in the experimental group, 17 students were taught with curriculum-based instruction (CBI) in the comparison group. According to the result of the one-way ANCOVA (analysis of covariance), the students' NOE views were significantly affected by EDBI. Moreover, the positive effect of the EDBI on the students' views for various NOE aspects was affirmed by the results of qualitative data in the study.