Abstract: Based on the paramagnetic characteristics of liquid oxygen,a set of visual verification experimental system for liquid oxygen suspension by magnetic compensation was designed with a superconducting magnet as the controllable magnetic field provider.By varying the current in the superconducting coil,a suitable and continuously stable magnetic force could be achieved to compensate the gravity of the fluid.The microgravity suspension phenomenon of liquid oxygen and the bubbles was observed at the optimal magnetic compensation point.The process of bubble generation and detachment as well as the characteristics at the gas-liquid phase interface of liquid oxygen under magnetic compensation microgravity had been recorded.The results qualitatively demonstrate the dominant role of surface tension under microgravity,and also verify the feasibility of studying the mechanism of liquid oxygen in microgravity environment on the ground by magnetic field compensation.