As an important measure of emergency language service in Japan, “Easy Japanese” is used in the handling of public emergencies and plays an important role. This paper took Japanese government websites as the investigation object, investigated the application of “Easy Japanese”, and put forward the enlightenments for the development and application of “Plain Chinese” in China. For foreigners who are “weak in information”, the service scope of “Easy Japanese” are more extensive, and the effect of information transmission is more obvious. When developing and applying “Plain Chinese”, we should refine the applicable objects and clarify the simplification rules; conduct language survey and construct a precise response framework; gradually popularize and expand the application field; develop corpus to improve the quality of machine transcription.