The invention belongs to the field of cables, and particularly relates to a special-shaped loose tube. The loose tube is formed by a loose tube main-body. An inner cavity of the loose tube is formed inside the loose tube main-body. At least one optical communication component is disposed in the inner cavity of the loose tube. The loose tube is characterized in that a plurality of position limitingcavities are distributed on a wall body of the loose tube main-body, a baffle moving hole is disposed at one side of each position limiting cavity near an inner wall of the loose tube main-body, a central position of the inner cavity of the loose tube has a shaft and a plurality of baffles, and the baffles are formed by crossbeams, position limiting blocks, baffle main-bodies and ferrules. The loose tube solves the problem that once a loose tube is formed, different parts cannot be separated, and an insufficient rate of space utilization in the tube is caused. The loose tube of the inventionhas the advantages of adjustable space in the tube, a high space utilization rate, good heat dissipation performance, long service life, material saving and the like.