The present invention is a system for particle beam therapy (2, 2 ′) as viewed in the flow direction of the particle beam (4), a) an adjustable gantry (10, 10 ') and the gantry is a1) a beam coupling section (6) for the incident particle beam (4) that is oriented substantially horizontally and thereby defines a horizontal plane, and a2) a plurality of beam deflecting magnets And / or a first beam bending section (8, 8 ') with a beam focusing magnet (12, 14), the first bending section (8, 8') being able to adjust the particle beam (4) Bend into a vertical plane at an angle or bend 90 degrees in a horizontal plane, but have mechanical means that can be rotated at an adjustable angle along the axis of the incident particle beam (4). A first beam bending section (8,8 ') and a3) a first bend A beam transport section (16) for receiving the particle beam (4) exiting the beam bending section (8, 8 ') and guiding the particle beam (4) to the second beam bending section (18); and a4) a plurality of A second beam bending section (18) having a beam deflecting magnet and / or a beam focusing magnet, and a5) a beam nozzle (20) having a window for exit of the particle beam (4), The system for line therapy (2, 2 ′) further comprises: b) a patient table / chair chair that is rotatable in a horizontal plane or in a plane parallel to the horizontal plane and is selectively adjustable in the vertical direction ( C) The gantry (10, 10 ′) is supported by the tilt mechanism (24), and the tilt mechanism causes the gantry (10, 10 ′) to have an angle Φ1, Φ1ε [−90 °; + 90 °. ] Can be tilted vertically, and the gantry (1 , 10 ') has a pivot (7, 7') arranged in the region of the first bending section (8, 8 '), d) a second beam bending section (18) and a beam nozzle. For particle beam therapy, wherein the rotation mechanism (26) is arranged such that (20) is rotatable by angles Φ2, Φ2ε [−180 °; + 180 °] about the direction given by the angle Φ1. The system (2, 2 ′) is disclosed.本発明は、粒子線治療用のシステム(