Abstract: An atmosphere purification reactor using an electron beam and an atmosphere purification apparatus including the same are disclosed. The atmosphere purification reactor using an electron beam according to an exemplary embodiment of the present invention includes a housing which has a predetermined length and is formed to have a hollow form such that a fluid introduced from an outside passes through the housing, a guide part which is disposed in the housing in a longitudinal direction and guides a moving path of the fluid such that the fluid moves while rotating, and a transmissive part which is provided at one side of the housing so as to transmit an electron beam into the housing.