A neutron capture therapy system (100) that irradiates an object to be irradiated with a neutron beam by using an irradiation device (130), and includes a treatment planning device (110), a control device (120), and the irradiation device (130) included in a network via which transmission and reception of information are possible, in which the treatment planning device (110) creates treatment plan information related to a treatment plan and transmits the treatment plan information to the control device (120), in which the control device (120) adjusts the treatment plan information transmitted from the treatment planning device (110) to be usable in the irradiation device (130), and in which the irradiation device (130) irradiates the object to be irradiated with the neutron beam on the basis of the treatment plan information adjusted by the control device (120).
