The invention discloses an intelligent flexible manufacturing system which comprises a decision control center 1, a customer order and market analysis 2, distributed computing equipment 3, a communication network 4, a material information network 5, a product tracking control network 6 and a product and fitting processing network 7, wherein the decision control center 1 is a data, information and computation center, receives information from the customer order and market analysis 2, the distributed computing equipment 3, the material information network 5, the product tracking control network 6 and the product and fitting processing network 7 through the communication network 4 for computational analysis, and gives out a command after making a decision to carry out the system control on the the customer order and market analysis 2, the distributed computing equipment 3, the material information network 5, the product tracking control network 6 and the product and fitting processing network 7 through the communication network 4. The intelligent flexible manufacturing system provides fast execution and response abilities for multi-variety and small-amount orders, and is widely applicable to various manufacturing systems.