The invention discloses an economic management cost control system, including a man-machine operation module internally provided with an identity authentication module, a central processing unit, a data processing module, an actual cost accounting module, a contrastive analysis module, a risk assessment module, an expert assessment module and an artificial expert decision module. The system can avoid various loopholes which occur in a cost control process, and can give different disposal decisions according to different situations, and entering of each data carries identity information of an entering person, thereby realizing traceability of data, data are assessed in multiple aspects, a management requirement of related personnel for cost control is ensured, and a requirement for information sharing in all aspects can be met.