To provide a corrugate tube which reliably regulates the bending direction in a predetermined direction and is formed by blow molding.

A corrugate tube 10 includes a substantially cylindrical tube body 20 which extends in the axial direction and elastically bends. A slit 23 is formed over the entire length of the tube body 20 in the axial direction. The tube body 20 expands in a direction that increases the width of the slit 23. A projection part 25, folded along the axial direction, is provided at the tube body 20. The projection part 25 is disposed at a position of the tube body 20 which is radially opposite to the slit 23.