To provide a tube bending device having one loader capable of supplying a tube for any of plural tube loading sections.

This tube bending device 10 has a base 12, a bending arbor 16 and a bending arm 17 to bent a tube T around a prescribed bending axis 19, a spindle 11 extending in a prescribed feed shaft 20 direction and a clamp means 27 for the spindle end. The spindle 11 receives the tube T supplied to a first tube loading section 24 at a first position 22 and the tube T supplied to a second tube loading section 26 at a second position 23. A tube loader 38 is moved to each section 24, 36 by a moving truck 28, is fixed thereat to locking means 33, 47, etc., and can supply the tube T to any of each section 24, 26.