The invention provides a material stock management method and system, and relates to the technical field of stock management. The material stock management method includes the steps: acquiring the operation command information input by a user, wherein the operation command information includes an import operation command and a warehouse-out application operation command; according to the import operation command, establishing material information; according to the material type, distributing the material information, and obtaining the distribution information; determining the distribution information and making a plan, and generating the determination information and the monthly supply plan information which includes the arrival of goods material information; performing delivery management and warehousing management on the arrival of goods material information, and obtaining the warehousing information; and according to the warehousing information, generating the warehouse-out list application information through the warehouse-out application operation command, and performing warehouse-out management on the warehouse-out list application information to obtain the warehouse-out information. The material stock management method and system can realize dynamic positioning of warehousing and warehouse-out of materials, and can improve work efficiency and management efficiency.