Improved algae culture device

The invention provides an improved algae culture device which comprises a culture box body, sliding grooves, a circulating box, a flow guide pipe, a conveying pipe, movable traction supporting seat structures, an insertable floating culture frame structure, an insertable circulating shielding frame structure, a floatable sliding supporting frame structure, a first fixing plate, a U-shaped frame, a circulating pump mechanism, second fixing plates, sliding holes, a supporting plate, sliding rods and locking nuts, wherein the sliding grooves are formed in the middle positions of the inner walls of the left side and the right side of the culture box body respectively. Through the arrangement of supporting seats, movable brake wheels, traction rods, traction rings and the culture box body, the culture box body can be supported to work through the supporting seats and the movable brake wheels in the use process, use on land is facilitated, meanwhile, the traction rings are connected with an anchor in a telescopic m