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A new image encryption algorithm based on three levels and multilayer scramble is proposed in this paper. This scrambling schemes can be divided into primary, intermediate and advanced levels, with gradually increasing security. The key parameters of different levels are encrypted by Elliptic Curve Cryptography (ECC). We analyzed and verified the security, reliability and efficiency of this algorithm with an elaborate experiment. The experimental results and subsequent analysis indicate that this new algorithm possesses a large key space and high level security, and that time needed for decrypting the interactive image tends to +00. It provides a new method to satisfy the practical secure requirements of interactive information in the fields of aerospace, military, finance and economy, national security and so on.