To provide a pipe holding collet, to be specific, a collet to be used in a one-push type pipe joint.

The pipe holding collet 1 holds an outer surface of a pipe for feeding water and hot water arranged in the pipe joint. It is characterized by that it is provided with a cylindrical base part 2 having a diameter larger than an outer diameter of the pipe to be inserted, a plurality of protrusion parts 3 with tips extending in T-shapes from one end of the cylindrical base part, pawl parts 4 composed by acutely bending T-shaped heads 3a of the protrusion parts, and depression parts 5 formed toward T-shaped base parts 3b in bending parts.