The invention relates to an ERP system with an OA collaborative function, which comprises a financial management module, a production operation module, a supply chain and logistics module, a sales marketing and customer service module, a human resource management module, an operation system, an OA collaborative management module and an integrated document module; the financial management module, the production operation module, the supply chain and logistics module, the sales marketing and customer service module, the human resource management module, the OA collaborative management module and the integrated document module are respectively connected with the operation system through a network device. The integrated document module supports single piece management and batch-to-batch production mode through document circulation; and the OA collaborative management module is used for document sending management, document receiving management, workflow management, basic setting, to-do work, work query, process log, overtime statistics and completion data archiving. The OA collaborative management module is comprehensively introduced into the ERP system, so that the production cost is reduced, and the business decision and management capability of an enterprise is improved.