The present invention discloses an application service system based on a big data platform, and relates to the technical field of big data platform application service systems. The application servicesystem comprises a client, a server, a big data server, and a government affair system. The client communicates with the server through Ethernet; the server communicates with the big data server andthe government affair system through Ethernet; the client comprises an application unit, a policy query unit, and a browsing unit; the server comprises a policy updating unit, a storage unit, and a pre-auditing unit; the pre-auditing unit comprises a material pre-auditing module and an application submitting module; and the storage unit comprises a material information database and a policy information database. According to the application service system disclosed by the present invention, by setting an order downloading module, an information input module, a material uploading module, and apreview confirmation module in an application unit on the client, and by setting a material pre-auditing module and an application submitting module in a pre-auditing unit on the server, the failure of the company declaration is avoided, and application efficiency and a declaration success rate are improved.