There are several problems in sea target radar echo identify automation, such as single means, limited technique, low identify rate. It is difficult to content the need of battle. Combines the manual identify and artificial intelligence technique, which can raise the rate of sea target radar echo identify automatic. Analyses the image character of radar echo, abstracts the knowledge and experience of manual identify, synthesizes the technique of pattern identify, image dispose and auto classify identify, and constructs the system of sea target r