In the past few years, the theory of all direction imagery for local gravity and magnetic anomaly sources under complex conditions has been developed for the first time by the author. This paper gives a summary of this theory, which includes the practical value and academic significance of the theory, ther general forward expressions for spherical harmonic series of 3D body gravity and magnetic anomaly in the spherical coordinate system, the all directional continuance and all directional inversion of 3D body gravity and magnetic anomaly.