Abstract: By translate statistical model into the objective function optimization problem, a new method of field strength propagation prediction based on adaptive genetic algorithm, aimed at the problem of accuracy of statistical model is put forward. The improved adaptive genetic algorithm was proposed on the basic of the existing adaptive genetic algorithm to improve crossover operator and mutation operator, to avoid the premature problem and the slow convergence of simple genetic algorithm(SGA). The results presented in the field strength propagation prediction demonstrate that the new genetic algorithm is a superior algorithm.