The invention discloses a solar-powered totally-enclosed internal circulation refrigerator, which consists of a solar-powered heat collector, a condenser, an evaporator, a throttling element, a water turbine compression all-in-one machine, a one-way valve and an enclosed liquid storage tank, wherein the upper port of the solar-powered heat collector is communicated with the water turbine inlet of the water turbine compression all-in-one machine; the water turbine outlet of the water turbine compression all-in-one machine is communicated with the air sucking port of the water turbine compression all-in-one machine; the exhaust opening of the water turbine compression all-in-one machine is communicated with the air outlet of the condenser; the liquid outlet of the condenser is communicated with the inlet of the evaporator through the throttling element; the outlet of the evaporator is communicated with the enclosed liquid storage tank; the lower port of the solar-powered heat collector is communicated with the cooling liquid outlet of the condenser; the cooling liquid inlet of the condenser is communicated with the enclosed liquid storage tank; and the one-way valve is arranged between the water turbine outlet of the water turbine compression all-in-one machine and the enclosed liquid storage tank. The solar-powered totally-enclosed internal circulation refrigerator is low in price, high in performance price ratio, suitable for ordinary households, and convenient to popularize.