In order to improve the communication efficiency of submarine in the offshore operation and training, analyze 4 communication means of submarine, such as VLF communication, data link communication on board, satellite communication and buoy communication. According to the nature of the submarine communication problem and the goal to be achieved, the paper established an orderly hierarchical structure model, uses AHP method based on 360 degree feedback principle to determine index weight, quantifies the metrics, through normalization, the effectiveness evaluation results of 4 communication means are obtained, and the main reasons affecting the effectiveness of submarine communication are analyzed in this paper. The analysis results can provide reference for commanders to use submarine communication means to obtain the best communication efficiency.