To provide an optical fiber protective pipe which has the excellent mechanical characteristics required as a pipe for protecting an optical fiber and has the high threshold values of the insertion distance and insertion speed of the optical fiber units.

Plural pieces of ribs 2...2 consisting of a thermoplastic resin contg. 0.1 to 30wt.% lubricant are laminated on the inside surface of the pipe 1 consisting of the thermoplastic resin along its longitudinal direction, by which the friction coefft. of the inside surface of the pipe is lowered without degrading the mechanical characteristics of the pipe itself.