The work aims to design an auxiliary cognitive graphics tool to solve the problem of graphics and image cognitive difficulties caused by limited cognitive channels and lack of sensory channels in visually impaired children, to help them deepen their understanding of objects, improve their cognitive level and increase their learning interest.The amount of information of tactile graphics was improved by combining many kinds of sensory information. Based on the V-T-M graphic cognitive model of the blind, structured questionnaire survey and structured design flow were adopted to design the visual and tactile fusion graphics of the main content objects in primary school textbooks. And CAT empathy evaluation technology was used to evaluate the design effect.A series of visual and tactile fusion graphics suitable for visually impaired children in primary schools were designed, which significantly improved the cognitive clarity of the text objects of visually impaired children. At the same time, it increased their understanding, imagination, learning interest and aesthetic experience. The graphic design based on visual and tactile fusion meets the graphic cognitive needs of visually impaired children to a certain extent, and significantly improves the cognitive effect of visually impaired children on classroom learning content.