The invention relates to a method and a system for managing a prefabricated component warehousing based on RFID technology, which is characterized in that the method comprises the following steps: a warehousing management group and a ex-warehouse management group; wherein, the warehousing management group comprises the following steps: a warehouse yard is divided, the warehousing is set and the warehousing is completed; The ex-warehouse management group comprises the steps of component positioning, ex-warehouse inspection, loading recording and ex-warehouse completion. As the RFID technology is adopted, the yard dividing, warehousing setting, warehousing completion, component positioning, ex-warehouse inspection, loading recording, ex-warehouse completion are associated, real-time transmission of relevant information to the warehouse management server, completion of the warehouse information, ex-warehouse information collation and integration are performed, production components do notrepeat, components are more convenient to find, component ex-warehouse has no any problem, and further, prefabricated components warehouse management convenience, standardization and high efficiencyis achieved.