Aeromagnetic vector data processing method

The invention relates to an aeromagnetic vector data processing method. The aeromagnetic vector data processing procedures include: connecting an inertial navigation sensor with a magnetometer device, using an upper computer to receive data synchronously acquired by a magnetometer and an inertial navigator, synchronously processing the magnetometer data and the inertial navigator data and storing, correcting nonorthogonal degree of magnetometer data, correcting turning difference of the magnetometer data, transforming magnetic vector postures, and drawing a magnetic vector curve graph. Influences on data acquisition precision are specifically eliminated by singly correcting factors affecting acquisition precision of a magnetometer probe, precision of the magnetometer after secondary correction is greatly improved, matching of information acquired by the magnetometer and the inertial navigator is guaranteed by synchronously processing data of a magnetometer data packet and an inertial navigator data packet, and magnetic vectors are subjected to posture transform according to inertial navigator posture information, so that magnetic field data can be converted into magnetic vectors based on a fixed geographic coordinate system, and reliable vector data are provided for aeromagnetic measurement.