<p>Disclosed is a microwave plasma treatment device that is equipped with a waveguide (30a), in which microwaves are propagated, and two or more processing chambers (44), in which a prescribed treatment is performed using microwaves. Each treatment chamber (44) possesses an inlet port (46) through which microwaves are introduced from the waveguide (30a), and at least two of which inlet ports (46) are formed in the end (47) of the waveguide (30a).</p>
