The present invention relates to an axial turbine comprising a housing in which fluid flows; a turbine rotor being rotated by the fluid flowing into the housing; rotating blades attached to the turbine rotor to rotate the turbine rotor by the flowing fluid; fixed blades fixed to an inner casing enveloping the turbine rotor and arranged between the rotating blades to increase the expansion and speed of the fluid during the rotation of the rotating blades; a first guide member arranged to protrude from one side of the fixed blades so as to prevent the backward flow and stagnation of the fluid when the fluid flowing in from the entrance of the turbine moves to a fluid guide arranged at the end of the rotating blades; and a second guide member attached to the rotating blades and arranged to protrude from one side of the rotating blades so as to facilitate the flow of the fluid. The axial turbine according to one embodiment of the present invention facilitates the flow of the fluid passing through the turbine by making the flow in the turbine smooth and evenly distributed.
