To provide a work robot having an articulated arm, which prevents a tube having an operating cable stored therein from being entangled during execution of work of the articulated arm.

According to the structure of the work robot, the tube 10 having the cable 11 stored therein, is arranged between a front end arm section of the articulated work arm B consisting of a plurality of arms, and a base A movably supporting the articulated work arm B. The tube 10 has a springy wire member 12 having resilience loosely inserted therein. Further one linear end of the wire member 12 is movably supported.