Industrial robot with internal wiring

The utility model provides an industrial robot with internal wiring. The industrial robot comprises a plurality of action shafts, a transmission part and a motor for driving each action shaft, whereinbetween at least one pair of adjacent action shafts, an output shaft of the motor is in non-coaxial connection with an input shaft of the transmission part; a hollow structure for wiring is arrangedon the transmission piece; at least one action shaft is provided with a preparation interface; the preparation interface is connected with a preparation line, and the preparation line and a signal line and a power supply line of the lower motor jointly penetrate through an inner cavity of the hollow structure of the transmission part. According to the industrial robot, wiring can be conducted fromthe interior through the hollow structure of the transmission part, and in combination with non-coaxial connection between the motor and the transmission part, actions of the motor and the transmission part cannot be affected