The invention provides a self-cleaned spiral airlift inner-loop photobioreactor, which comprises a reactor main body and a multi-dimensional stereoscopic gas distributor. The multi-dimensional stereoscopic gas distributor includes multi-row and multi-angle bottom annular pipes and tubular distributing pipes, wherein the annular pipes and the tubular distributing pipes mutually communicate. A spiral jet flow in an algae liquid area is coupled by bottom airlift, and spiral upward flowing is achieved, a uniform flow field, without a dead area, is achieved in the reactor, so that a gas-liquid hybrid heat and mass transfer process is enhanced; with the structural design, under the irradiation of internal and external controllable light sources, alternate flowing of microalgae in a radial direction is promoted, so that an alternate bright-dark radiation effect is achieved, a light-shading effect is greatly relieved, a flash effect is enhanced and the efficiency of cultivating the microalgae and immobilizing carbon dioxide is improved; and by virtue of the multi-angle spiral jet flow, a good effect on scouring the inner wall of the reactor can be achieved, so that the phenomenon that the algae is attached to the wall is effectively solved, light transmittance is enhanced, the cost of such post-treatment as collecting the algae and the like is reduced and the economical efficiency of cultivating the algae in a large scale is greatly improved.