Abstract: In lake country densely covered with pounds,routine 2-D seismic exploration cannot reach upon elaborate perambulation degree,connot layout regular 3-D survey net too.In this paper,it primarily describes the method that rational economic and various flexible 3-D special observation systems are devised and carried through seismic exploration by using advanced equipment and adopting man-machine interactive method on this condition （following for short-special 3-D observation）.In Number Five Field first-mining area of Tengxian Coalfield,with the method of seismic exploration of special 3-D observation,it has brought obvious economic benefit and quit good geologic effect.