The utility model relates to an aquiculture apparatus, in particular to a solar power photovoltaic water circulating soilless culturing device for loaches. The solar power photovoltaic water circulating soilless culturing device comprises a culture pond, and is characterized in that the device further comprises a water outlet pipe, a water pump, an FAMS (circulating water processing system) and a water inlet pipe; the water pump is powered through a solar power supply system, the water outlet pipe is mounted at the bottom of the culture pond, and the water inlet pipe is mounted at the top of the culture pond. In the utility model, plastic flowers and plants instead of soil are added to the bottom of the culture pond, which not only conforms to life habits of the loaches but also can enable water quality to be purified ideally, and the yield of the loaches is improved; and water in the culture pond forms microcirculation by virtue of a solar power photovoltaic method, so that dissolved oxygen is increased, and the water quality is purified through the FAMS and a suspended matter filtration system.