The SNARC effect is an important feature of human spatial cognition. However, most existing theories and experimental studies of SNARC effect have been based on small-scale space environment, leading to low ecological validity. Previous study conclusions of the SNARC effect are derived from the experimental environment itself or spatial cognitive strategies. Therefore, it is important to make the experimental environment close to the real-world environment. Augmented reality (AR) is a virtual reality technology widely used in psychology, engineering and computer technology. AR overlaid virtual information into a real psychological world. This technology synchronises the real psychological environment and the virtual environment in real-time at the same spatial relationships (Zhao Xiaojun, You Xuqun, & ZhangWei, 2014). AR is superior to the virtual reality technology and more idealization than reality. It makes virtual scene generated by computer to overlay in real scene. This makes good fusion between individual and current situation too. AR technology with strict control of additional variables can have the advantages of large scale space, thus it can improve the ecological validity of the experiment and realize the integration of human - machine - environment system. AR provides an indispensable condition for large-scale spatial cognition. ERPs can record and compare the brain electrical activities at difference periods when participants conduct digital processing. ERPs provide an approach to obtain neural physiological mechanism of spatial cognition. In a relatively real and operating situation, both technologies make the participants to focus on the real emotional experience. The combination of these two technologies can result in higher ecological validity of biological neural information feedback and improve the theoretical framework. The purpose of this study is to explore the prospect of SNARC effect from three issues, including spatial cognition psychology for large scale space in combination with embodied cognition, spatial cognition study based on AR, SNARC effect based on AR and ERPs. The SNARC comprehensive experiment system of this study included editor system of AR and wireless event related potential system connected by (1) synchronization signal based on Bluetooth, and (2) Python software and Access SDK software. Based on augmented reality and cognitive neuroscience paradigm, this study established a SNARC processing model based on large scale space environment from two aspects of core processing system and the processing characteristic through interactive situation generated from augmented reality. The core processing system of SNARC effect is divided into static space SNARC, dynamic space SNARC and static - dynamic SNARC. Processing characteristics mainly analyzed plasticity, development and individual difference. The study provided a more complete knowledge for psychological research of human space cognition.