Abstract: The biomass and soil fertility of different patterns of the mixed stands of Michelia fujiansis and Chinese fir at the fifth year were investigated  The results showed that the biomass of intercropping was higher （8548 t／hm2），the biomass of arbor was also higher （7848 t／hm2） Chinese fir only had lowest biomass of stand and arbor （5204 t／hm2 and 4302 t／hm2） Reunification and soil structures of the intercorpping presented better characters， soil bulk density decreased The porosity and the air flowing increased by 145％ and 36％ The content of soil nutrients， organic matter， N，P and K rised obviously