Abstract: Modern search technique is briefly reviewed, its main shortcomings discussed, and a new kind of high-speed and effective search technipue named as the search technipue of Boolean algebra type developed in this paper.Its four subpropositions are described and illustrated with related practical examples.Finally a combinatorial proposition is given, with the aid of the related heuristic informations, the search process in set-space is isomorphic to a Boolean algebra from the point of view of problem solving.