We carried out the research of the testing parameters of biofan in order to formulate the practical and feasible industry standard for it.It is difficult to quantitatively analyze the performance of biofan, because the water in culture pond constantly changes with various factors such as water temperature, air pressure, photosynthesis, water salinity and farmed species, etc.To study the testing parameters of biofan, we utilized the 6.3m diameter laboratory standard tank as a testing platform, and conducted the experiments at 20℃ water temperature, 101.325 kPa air pressure, and 0 mg/L initial concentration of dissolved oxygen, by reference to the standard testing procedures described in the "SC/T 6009 Test methods of oxygen-enriched capacity for aerator".The comparative experiment was done for three types of biofan in clean water.The experiment results show that it is still feasible to judge the basic parameters such as net buoyancy rate and insulation resistivity by using the criteria of aerator; and the other parametes such as no-load noise, oxygen transfer capacity and power efficiency changed greatly; the parameter of the action depth of biofan should be added to be adapted to the qualification testing of biofan.