The work aims to explore the influence mechanism of visual design distractors on search efficiency in mobile application interface, and propose design strategies and methods to improve the search efficiency of visual interface. Literature research, visual search theories and behavioral models were sorted out. And on this basis, visual information search thinking logic was explored. Based on the study room reservation system of a university library, 7 sets of experimental samples of interface visual distractors were designed. Through dynamic interface interaction experimental research on eye movement, the mechanism of influence of interface visual design distractors on search efficiency was ascertained. Among the 7 sets of different interface visual design distractors in interface structure, functional layout, interaction mode, information presentation, information hierarchy, color matching and UI animation guide, the search efficiency of user target tasks was significantly different. Search type interface design should make the interface structure clear and the distribution of primary and secondary functions reasonable. It is required to be more flexible in interaction, minimize information hierarchy and visualize information appropriately, and give users comfortable color contrast and appropriate UI motion guidance.