The work aims to construct a visual design pattern of Chinese learning APP interface for Mongolian preschool children throughthe four elements of the ARCS motivation model and carry out the design practice with this pattern. Firstly, the four elements of ARCS motivation model were extracted by literature research method, and the preference weights of Mongolian preschool children for each indicator of learning motivation were determined based on ARCS motivation model. Secondly, the combination of the visual design patterns of the interface was determined by orthogonal table, the visual draft sample of the interface design was established and the relevant experimental data of subjects were collected. Next, a relationship model between the learning motivation and the visual design patterns of the interface was established based on joint analysis. Finally, the optimal design scheme was determined based on the results of the joint analysis, and the results of this design scheme were verified by a Likert 5-point scale. The combination of interface visual design patterns based on ARCS motivation model could be constructed as ecological style of visual form, anthropomorphic form of icon style, doll body of font style, 50px of font size and #ffffff/#ffe6a2/#b7eb6d/#00bae5 of color recognition. The visual design pattern of Chinese learning interface for Mongolian preschool children based on the ARCS motivation model can effectively obtain the motivation preferences of Mongolian preschool children's Chinese learning indicators, which proves that the pattern can effectively maintain and stimulate Mongolian preschool children's learning motivation for Chinese education, thus becoming a feasible design scheme.