A particle beam therapy apparatus (1,2, 100) comprising: an irradiation nozzle (16, 104) that irradiates a particle beam; a treatment table (18, 102) on which a patient is placed; and a control device that moves a movable body and sets a relative position and posture of the irradiation nozzle (16, 104) and the treatment table (18, 102), the movable body being at least one of the irradiation nozzle (16, 104) and the treatment table (18, 102) that is capable of motion, and a display device for displaying information, wherein the control device determines a movement path of the movable body when adapting the positional posture of the movable body from one condition among a plurality of prescribed conditions to another condition, obtains an evaluation value for a case of adapting the positional posture of the movable to each of a plurality of prescribed conditions, the evaluation value representing a motion state of the moving body when one type of treatment is performed by moving the moving body according to the movement path, determines a setting order for adapting the positional posture of the movable body to each of the plurality of prescribed conditions based on the evaluation value, and adapts the positional posture of the movable body from one condition among the plurality of prescribed conditions to another condition by moving the movable body according to the movement path, the particle beam therapy apparatus (1,2, 100) characterized in that the display device is configured to display information indicating the setting order, and in that the control device is configured to change the setting order according to read operation information while information indicating the setting order is displayed. an irradiation nozzle (16, 104) that irradiates a particle beam; a treatment table (18, 102) on which a patient is placed; and a control device that moves a movable body and sets a relative position and posture of the irradiation nozzle (16, 104) and the treatment table (18, 102), the movable body being at least one of the irradiation nozzle (16, 104) and the treatment table (18, 102) that is capable of motion, and a display device for displaying information, wherein the control device determines a movement path of the movable body when adapting the positional posture of the movable body from one condition among a plurality of prescribed conditions to another condition, obtains an evaluation value for a case of adapting the positional posture of the movable to each of a plurality of prescribed conditions, the evaluation value representing a motion state of the moving body when one type of treatment is performed by moving the moving body according to the movement path, determines a setting order for adapting the positional posture of the movable body to each of the plurality of prescribed conditions based on the evaluation value, and adapts the positional posture of the movable body from one condition among the plurality of prescribed conditions to another condition by moving the movable body according to the movement path, the particle beam therapy apparatus (1,2, 100) characterized in that the display device is configured to display information indicating the setting order, and in that determines a movement path of the movable body when adapting the positional posture of the movable body from one condition among a plurality of prescribed conditions to another condition, obtains an evaluation value for a case of adapting the positional posture of the movable to each of a plurality of prescribed conditions, the evaluation value representing a motion state of the moving body when one type of treatment is performed by moving the moving body according to the movement path, determines a setting order for adapting the positional posture of the movable body to each of the plurality of prescribed conditions based on the evaluation value, and adapts the positional posture of the movable body from one condition among the plurality of prescribed conditions to another condition by moving the movable body according to the movement path, the particle beam therapy apparatus (1,2, 100) characterized in that the display device is configured to display information indicating the setting order, and in that the control device is configured to change the setting order according to read operation information while information indicating the setting order is displayed.