The invention relates to a material metering method, which is particularly suitable for aggregate metering of asphalt concrete mixing equipment, can greatly improve the gradation precision of an asphalt mixture, and provides a finished product mixture meeting the demands of high-grade roads. The material metering method disclosed by the invention comprises the following steps that key materials in a mixing ratio are determined according to the mixing ratio; the pre-weighing values of the key materials are automatically calculated; materials are mixed by a metering system according to a set material mixing sequence and an algorithm; the key materials are metered according to the pre-weighing values; and after the metering of all the materials is completed, the metering system calculates the secondary metering values of the key materials according to the actual metering condition of the materials, and the secondary metering values of the key materials are metered according to a set material mixing mode and an algorithm, so that the complete material mixing process is completed. Through the adoption of the material metering method disclosed by the invention, the proportions of the key materials in the mixing ratio can be guaranteed to meet mixing requirements, the proportion precision of the key materials in the gradation can be guaranteed furthest, and the quality and the properties of finished product materials are improved, so that the quality of a built road is improved, the service life of the built road is prolonged, and the occurrence of road surface diseases is reduced.