Using the elderly basic condition and the community service demands survey data from the Beijing Xicheng district conducted by Institute of Gerontology at Renmin University of China in 2013, we classified the potential influencing factors on elder's preference for old-age support into four categories: elder's own characters, health conditions, family situation and community environment. We define general old-age support which include family care, institution care and family along with community care. Using Multinomial-Logistic Regression, we examine and compare the importance of each factor. The conclusion shows that senior citizens of downtown area in Beijing are more active in such selection but is still traditional in general. The reason for them to choose non-family support pension mode has more correlation with psychological feeling rather than the objective physical limit. The variable which affects the support pattern preference significantly is children's filial piety rather than the number of children and whether their spouses are alive. In addition, the influence of community service on preference for patterns of old-age support is relatively weak, and need to be further strengthened.