In order to solve the problem of pattern recognition of similarity of curves,a k ind of pattern recognition technique based on genetic algorithms is put forward in this article,namely,progressive hierarchy decomposite technique,and this tech nique is applied to determine the parameters of aquifer using type curve method. The results indicate that this technique is not only feasible,but also can impro ve the accuracy of aquifer's parameters.The technique presented in this art icle is a preferable one for solving the problem of pattern recognition of simil arity of curves.