War has played an important role in the human history, especially in some decisive social changes or events. However, war has been likely to be a man-only field which has been seen as a symbol of heroism. It is treated as the basic value of military to achieve heroic masculinity. Any behaviors, languages, actions and goats of military organizations have few gender-specific considerations. Even there is any gender-specific consideration, it presents a man-like or man-priority thought, such as heroine. In the early days, most women were recruited into military due to their female role that is care-givers or auxiliaries, although there are few women regarded as excellent women soldiers. Therefore, women have played auxiliary roles in military organizations for a long time. Following social changes, women gradually change their military roles from informal to formal and from moral to automatic participation. This process marks an important change of women's decision-making in occupation choice, and also draws the context of women's role change in the military. The study examines the changes of women's roles in Chinese military from the social constructionist view of gender. It is argued that the changes of women's roles in Chinese military are the result of transition and reconstruction of patriarchy. It is difficult for women to get free from the vicious cycle because of the arrangement of their positions in military organizations. Before the War of Japanese Invasion, women were seen as war heroines due to their services for the success of their father or husband. After that, the use of femininity, that is, those mother-like roles, is the main function of women in the military. They are not successfully integrated into the military. Most important, women soldiers are seen as a kind of working women in modern Taiwan society. This transition is helpful in shrinking the limits of their military roles and extending their plural roles in the military. Women's roles in the military are constantly reconstructed by women's recognition of themselves and the interaction with their counterparts.