A robot (1A) comprises a robot fixing base (1), a first speed reducing mechanism mount base (11) mounting thereto a first shaft speed reducing mechanism (12) and a second shaft speed reducing mechanism (21), a first arm (AM1), a second speed reducing mechanism mount base (11) mounting thereto a third shaft speed reducing mechanism (31) and a fourth shaft speed reducing mechanism (41), and a second arm (AM2). An electric cable (CB) or piping passes through a hollow portion of the first shaft speed reducing mechanism (12) from the robot fixing base (1), is routed around an outside of the second shaft speed reducing mechanism (21) and extends along the first arm (AM1).