Abstract: Assets evaluation was the key link in government purchasing Non-state-owned public welfare forest, not only considering its market value, investment, operational and income, etc.,, but also comprehensively considering its ecological service value. The market value was evaluated by different methods, according to forest quality, market condition, replacement cost of non-state owned public welfare forest. And the ecological value was also evaluated by evaluation index determined by its main ecological function. There were neither unified method and index system nor evaluation technology research on evaluating public welfare forest at present, which needed further study and promotion.