In order to provide a microwave treatment apparatus capable of properly controlling microwave irradiation, a microwave treatment apparatus 1 includes: an irradiating portion that performs microwave irradiation from multiple emitting portions; a moving portion that individually moves the multiple emitting portions; and a control portion that controls movements of the emitting portions by the moving portion, wherein the irradiating portion is such that phases of microwaves that are emitted from the multiple emitting portions are changeable, and the control portion controls phases of microwaves that are emitted by the irradiating portion from the multiple emitting portions.