The invention discloses a user service expansion information interaction system, and relates to the field of power consumer electricity handling service. At present, the power application service is mainly accepted by an online APP, the power utilization relates to a large number of professional terms, and the difficulty of completing the power application by the user is large; the communication in the power handling process is mainly realized through telephone or field communication, so that the communication efficiency is low; moreover, no work mark is left in the existing handling channel,so that the work traceability and evidence presentation during later disputes are inconvenient. In the system, a user and a client manager can apply for electricity through respective clients via a user service expansion information interaction platform to perform communication and interaction, and the system platform comprises a panoramic display module, an interaction service module, a work stand module, a message management module and a keyword extraction module. According to the invention, online interaction between a user and a client manager can be conveniently realized, keyword information comparison and interaction traces are realized, the convenience of power application of the user is improved, the power application efficiency is greatly improved, and work tracing is facilitated.