To elucidate the effects of different tillage practices with fertilization pattern (no straw returning, straw returning and straw returning with organic fertilizer) on soil bulk density, three phase ratio and fixed ammonium in the one year and one cropland layer (0-15cm) of Maize in the northeast black soil area, we studied two year field experiment. The results showed that: (1) Under years of tillage, the soil bulk density of the rotary tillage layer increases gradually, while deep tillage combined with straw returning can alleviate or even reduce this change.there has different effect on soil bulk density by different straw returning, the way of straw returned to affect the order from large to small is: straw returned > straw returned with organic fertilizer > conventional fertilization of chemical fertilizer.(2) Different tillage treatment has a direct impact on soil three phase ratio.Two years rotation tillage layer soil increased solid ratio, gas and liquid ratio decreased; deep turning makes the soil three phase ratio more ideal. The effect of straw returning with organic fertilizer is better than straw returning and conventional chemical fertilizer application alone. (3) There is no effect on the top layer of soil fixed ammonium content by different tillage methods. However, there is a significant difference in the content of ammonium in the fixed state of soil in soil layer by different straw returning, the straw returning with organic fertilizer can significant increase the content of ammonium in the fixed state, the straw returning next. (4) There was a significant negative correlation between the content of fixed ammonium and the straw returning. Deep turning and straw returning combined with orgnic fertiziler can improve the soil bulk density of 0-15cm, increase the content of ammonium in the fixed state, and be more suitable for the current area.