Automatic bioreactor

The invention discloses an automatic bioreactor, and belongs to the technical field of microalgae culture. The automatic bioreactor comprises a solution collecting tank, a main shaft, a water distributor, light source devices and a vertical shaft wind driving device, wherein a reflective layer is arranged on the inner wall of the solution collecting tank; the solution collecting tank is used for containing culture solution for microalgae breeding; the main shaft is vertically mounted in the middle of the solution collecting tank and is rotationally connected with the solution collecting tank;a spiral three-dimensional spiral culture unit is arranged on the main shaft, and comprises three-dimensional spiral transparent plates with the same widths; the water distributor is helically arranged along the edge of the inner side of the three-dimensional spiral culture unit; water distribution holes corresponding to the upper surface of the three-dimensional spiral culture unit are uniformlyformed in the water distri