The invention discloses an intelligent constructing system based on CPS (Cyber-Physical Systems). The intelligent constructing system comprises a consumer personalized customization module, a productdesign decision-making and learning module, a factory production decision-making and learning module, a supply chain decision-making and learning module, a site construction decision-making and learning module, a delivery-and-operation-and-maintenance decision-making and learning module, a factory production perceiving and executing module, a supply chain perceiving and executing module, a site assembly perceiving and executing module, a delivery-and-operation-and-maintenance perceiving and executing module, a product design knowledge base, a factory production knowledge base, a supply chain knowledge base, a site construction knowledge base and a delivery-and-operation-and-maintenance knowledge base, wherein the consumer personalized customization module, the product design decision-making and learning module, the factory production decision-making and learning module, the supply chain decision-making and learning module, the site construction decision-making and learning module and the delivery-and-operation-and-maintenance decision-making and learning module belong to the virtual world; the factory production perceiving and executing module, the supply chain perceiving and executing module, the site assembly perceiving and executing module and the delivery-and-operation-and-maintenance perceiving and executing module belong to the physical world; the product design knowledgebase, the factory production knowledge base, the supply chain knowledge base, the site construction knowledge base and the delivery-and-operation-and-maintenance knowledge base belong to the knowledge world. According to the intelligent constructing system based on the CPS, the intelligent computation and analysis capacity of a computer is used for replacing manual empirical judgment or decision,full industry chain designing is achieved, decision-making mistakes in the building construction process are reduced, unnecessary production waste is reduced, the construction period is shortened, the invest is reduced, and the real-time efficiency of building construction engineering is improved.