This paper aims to explore the narrative expression skill of design students through manipulating image structure. Moreover, narrative expression is the skill of interpreting design with narrative. The study is a classroom experiment conducted naturally, and the experimental data is obtained and analysed by quantitative analysis. We found differences in students' narrative tendencies and richness in overall narrative expression. The teaching and training of design narrative can effectively help students familiarise themselves with the design process and personal skill integration and encourage students to pay attention to the design of elements and content. This will improve students' design competencies under skills different from technology. The paper concludes that students must improve and integrate design competencies through practical methods under other narrative tendencies. Furthermore, the lecturer can explore and adjust design teaching through design narrative training to strengthen or balance students' design performance competency.