Innovation and improvement of visual communication design of mobile app based on social network interaction interface design

In order to achieve information visualization, realize good interaction between users and information, and meet the needs of users, this study first studied the interaction behavior of the user when using the smartphone was studied, and analyzed the visual factors of the smartphone interface were analyzed from the user sensory interaction level, and the user operation mode level, from the expression of visual form to the commonly used interface mode and User Interface (UI) component space. On this basis, the situational visual expression of the scene in different interaction scenarios was analyzed. Secondly, the basic theory of visual design of smartphone application interface was explained from the perspectives of aesthetics, semiotics and Gestalt psychology, In other words, the visual design of the application interface should be metaphorical, highlighting the key points in the overall visual style, and conforming to the user's psychological model. At the same time, in order to meet the user's personalized needs for control, it must add customized options. Finally, the model of the interface visual design method of the interdisciplinary Shared Communication system for the interface design of the mobile APP was constructed, and the case of Didi Chuxing was analyzed, which preliminarily confirmed the feasibility of the construction of the interface visual design method model of the Shared Communication system.