The magnetic suspension phenomena of nonmagnetic bodies were demonstrated by two kinds of ferrofluids .The magnetic suspension force was deduced based on Bernoulli equation of fer-rofluid and eventually controlled by magnetic susceptibility ,the applied magnetic field and the mag-netic field gradient distribution .The MFP-1 ferrofluid suspended six kinds of nonmagnetic bodies un-der same condition ,the Rosensweig peaks were also found .The MFP-2 ferrofluid suspended only pol-yvinyl fluoride ,glass and aluminum double cones because of its smaller magnetic susceptibility .With increasing current ,the magnetic field gradient became stronger in the coil centre and weaker near the edge;therefore the nonmagnetic bodies were pushed to the sidewall of the glass beaker .%基于磁性液体的Bernoulli方程推导了磁性液体中非磁性物体所受的磁悬浮力，通过演示实验研究了2种磁性液体对不同密度非磁性物体的磁悬浮情况．磁性液体中非磁性物体所受的磁悬浮力受磁性液体的磁化率、磁场强度、磁场梯度的影响．相同条件下，随磁场强度和磁场梯度增强，M FP-1磁性液体分别在不同电流时将6种非磁性双锥体浮起，当电流达到3．00 A时，还出现了Rosensweig尖峰；MFP-2磁性液体的磁化率小于MFP-1磁性液体，仅浮起了聚氟乙烯、玻璃、铝双锥体．随着电流增大，中心磁场梯度较强，边缘磁场梯度较弱，出现非磁性双锥体向侧壁移动现象．
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