Abstract:In order to solve the problems of long waiting time, low service quality, overload operation and high pressure on the staff in the VAT business of the supplier hall, this paper puts forward a business optimization scheme based on the technology of "mobile interconnection" and "big data", which puts the invoice business into operation mode. First of all, the paper invoice information collection process is transferred from offline to online, and the invoice information collection is changed from on-site scanning to on-line registration. Then, the internal and external network security problems are solved by setting security isolation gate, and the registered information is transmitted to ERP system, the remote pre-examination of invoices can be completed by business personnel through intranet ERP system. This paper introduces the on-site business booking mode, intelligently analyzes the massive invoice information and ERP contract data by using large data technology, scientifically sets the upper limit and time period of booking, and guides suppliers to handle business in a planned way; realizes the backstage batch automation certification through direct connection with the national tax system. It solves many difficult problems in handling VAT invoice business in the current vendor service hall and promotes the optimization of business environment. At the same time, advanced electronic docking with future invoice is completed.