The study is to distinguish the periods before and after the alternation of the two political parties with the analytical frameworks in three levels including "Historic Structure", "Political Economy" and “Mobilization of Bias”. Firstly, the different developments and evolutions of volunteer military policy is discussed for the periods before the alternation of political power and before/after the two alternations of political parties through the historic structure of volunteer military policy. Secondly, whether the transformation of volunteer military policy satisfies the interests of relevant actors or group is discussed through political and economic analysis, and the optimal resource utilization and profit is achieved. Lastly, the process of mobilization of bias with relevant actors or group and the interaction thereof are discussed through evolution of volunteer military policy. The research found that the tension or relation between Taiwan and China are not the main factor that affect the military service policy, but competition among political parties is the key for the transformation of volunteer military policy. Furthermore, with the politic support, the financial burden was not the element that limits the implementation of the volunteer military policy. Relatively speaking, the number of military recruitment is significant to the success of volunteer military policy. After the transformation of military service system, which is still not a “fully“ volunteer force to be accurate, the length of compulsory military will be shorten to four months of military training. Therefore, after the implementation of volunteer military policy, it is not equivalent to the exemption from military service, two are not equal. In this study, those findings and results have concluded with the following recommendations as future reference for the transformation of national military recruiting policy: 1.The ruling and opposing political parties need to have consensus in order to have stable development between Taiwan and China, as well as the volunteer military policy. 2. Alternative human resource strategy in response to low birth rate. 3. Plans for reducing nation’s financial burden of revenue-raising. 4. Revelation from the successful volunteer force recruiting system of the United States.