The security of color image has always been concerned by scholars. To deal with the defects of traditional color image encryption algorithm, such as poor scrambling effect,weak diffusion characteristics and resistance to statistical attacks,this paper presents a Hyper-chaotic Color Image Encryption Algorithm based on Hash and DNA coding. In the proposed algorithm,the parameters of Arnold chaotic map are generated by hash algorithm first; then, combined with Arnold chaotic map and Logistic chaotic map, the image is scrambled in three dimensions of R, G, and B; Finally, the image is chaotically processed using DNA coding. The theoretical analysis and computer simulation show that the proposed algorithm has good encryption effect, and it has good resistance to statistical and differential attacks.