There exist large quantities of aerogeophysical survey data, and the sampling rate of the coordinate data is not the same as that of the field data. Therefore, the efficient storage of the data seems to be the key technical problem in designing aerogeophysical database structure. The speed of storing and picking up data by the routine storage methods is slow. The storage method of BLOB can not only solve the problem that the sampling rate of the coordinate data is not the same as that of the field data but also reduce the record number and speed up storing and picking up data.