According to statistical data released by Japan Robotics Industry Association, Japan's industrial robot shipments reached 750 billion yen in 2017, which was the fourth consecutive year of growth and a record high. Japanese robotics industry owns top-notch technologies and holds a pivotal position in the world. The birth of any new technology or new product will fluctuate the market or specific industry. The re-emergence of artificial intelligence is no exception. Artificial intelligence will probably completely replace the algorithm used by existing robots in the next five to ten years. The combination of big data and cloud computing will also impact the technological trends of the robot market. In this article the applications of automation in Japan from nine key aspects is first analysed. Then it looked into the development of robotics technology in Japanese electrical motor makers from three different major directions is reviewed further in details.