Network information security suffered many network threats; the existing encryption algorithm has been unable to meet the needs of network and information security problems. The improved ECC algorithm based on network information security, the algorithm based on the original ECC algorithm and its optimization dot product operation optimization and square residual determination, optimization and transformation of the private key update to improve the original operational efficiency and safety performance of the ECC algorithm. The experiments show that the ECC algorithm based on network information security improvements in safety performance than the RSA algorithm as well as the original ECC algorithms have significantly improved the program is effective.