1. The 2008 and 2009 National Defense Reports had both emphasized on the "asymmetric warfare capabilities" as one of the important developments of our future military. Along with the development of anti-vessel missiles and recon system, submarines no longer require to engage closely with escort vessels but can initial attack out of visual range. 2. Due to the decrease of our national defense budget each year and the increase of PLA's military expense, we should consider changing our usual pattern of building our military force. Since we cannot compete with PLA's military expense, we need to utilize our limited budget and focus on developing asymmetric anti-submarine capabilities in certain areas in order to bring out the efficiency in combat. 3. By developing asymmetric anti-submarine capabilities such as gaining passive acoustic analysis abilities, setting up PLA vessels sound prints database, constructing underwater testing facilities and surveillance system, developing non-acoustic submarine detection technology, and developing five hundred tons offshore domestically made submarines, we can be more efficient in combat.