Abstract Political behavior in organization is undeniable, while studies of organizational politics lasting for recent decades had accumulated abundant understanding in this area. However, there are still many arguments against this complex subject needed further research. The purpose of the research is 1) to test and verify the input model of Organizational Politics Perception Model¡C 2) to test the effectiveness and reliability and solve the controversy of dimensions of POPS ¡C 3) to further refine the input model by type analysis and try to explain the cause of Organizational Politics Perceptions¡C For research procedure and sample: Participants were 973 and drawn from Hospital¡Bprivate and public service firms¡Btraditional manufacturing and high-technical firms¡CThe research method is descriptive statistics analysis¡B reliability analysis¡Bfactor analysis¡Bregression analysis¡Bone-way ANOVA and cluster analysis¡C