Abstract: The structure dimensions of employees’ perceived organizational support (POS) and the relations between POS and correlative variables were investigated in this study. The results showed that Chinese employees’ POS should be multi-dimension structures which is different with the single dimension of POS of Western countries. The Chinese employees’ POS structure is three dimensions model which include Working Support, Identifying Value and Caring about Well-being. The POS have the active effect on the affective commitment and altruism behaviors. The procedural equity influence the form of POS

Key words: perceived organizational support (POS), organization commitment(OB), procedural equity, altruism behaviors