System for expropriation of houses on state-owned land

The invention discloses a system for expropriation of houses on state-owned land, and relates to the field of electronic informatization and the technical field of geographic information. The system is characterized by comprising a house expropriation business management subsystem, a watching representative generation subsystem and a house selection sequence number lottery subsystem; the house expropriation business management subsystem performs statistical analysis on expropriation compensation information according to house removal compensation standards to generate a compensation expense model, and imports calculation parameters of specific compensation expense items to the compensation expense model to generate a specific removal compensation expense scheme; and the watching representative generation subsystem performs data calculation on received information of an expropriated user selecting exchange of property right to generate a winning model, and randomly generates a certain proportion of watching re