PURPOSE: To provide a radiotherapy equipment which can minimize exposure dose of healthy parts by reducing errors of the rotation angles of rolling and pitching of treatment bed and by precisely setting the diseased part to the iso-center.

CONSTITUTION: On a supporting bar 8, a rolling mechanism 10 is installed rotatably by the axis 11, and the motor is fixed by the supporting board 30. Installed on the shaft 32 of the motor is the rotation board 33 on which the pin 34 stands eccentrically, and the connecting rod 37 is fixed rotatably to the rotation board 33 and the rolling mechanism 10 with the pins 34 and 36. There, the rolling mechanism 10 is pushed up/down by the rotation torque of the motor through the connecting rod 37, and the rolling mechanism 10 rolls around the axis 11.