The design of an efficient one-way hash function with good performance is a hot spot in modern cryptography researches. In this paper,a hash function construction method based on cell neural network with hyper-chaos char-acteristics is proposed. First,the chaos sequence is gotten by iterating cellular neural network with Runge-Kutta algorithm,and then the chaos sequence is iterated with the message. The hash code is obtained through the corre-sponding transform of the latter chaos sequence. Simulation and analysis demonstrate that the new method has the merit of convenience,high sensitivity to initial values,good hash performance,especially the strong stability. The design of an efficient one-way hash function with good performance is a hot spot in modern cryptography researches. In this paper, a hash function construction method based on cell neural network with hyper-chaos char-acteristics is proposed. First, the chaos sequence is gotten by iterating cellular neural network with Runge-Kutta algorithm, and then the chaos sequence is iterated with the message. The hash code is obtained through the corre-sponding transform of the latter chaos sequence. Simulation and analysis demonstrate that the new method has the merit of convenience, high sensitivity to initial values, good hash performance, especially the strong stability.