In terms of development of equipment and from the angle of the acoustic countermeasure equipment mechanism,the acoustic countermeasure equipment can be sorted as gas-veil bubbler,noise jammer and acoustic decoy on discussing status of submarine acoustic countermeasure and characters of combat skill.Based on the antagonizing mechanism of these acoustic countermeasures equipment,their suitable application occasion and tactical purpose are analyzed deeply in this paper.Furthermore,this paper puts forward that all kinds of acoustic countermeasure equipment have dul-efficacy on application occasion,and figures out that after applied the acoustic countermeasure equipment,it's an significant step for submarines to take maneuver policy so as to reach the tactical purpose.