Abstract: The precision of different datum planes and statics methods was investigated on model measurements for complex subsurface. Statics quantity was calculated with horizontal and 4 floating datum planes and statics was carried out with two-pass and one-pass methods. The results were as follows. The horizontal datum and two-pass statics method gave minimum depth error on time section. As the datum goes away from the earth surface, the error generated by the horizontal datum and one-pass statics method increased. For non-horizontal datum two-pass statics method or one-pass static method, the depth error increased with the undulation of the datum, sometimes even leading to fake structures.