To improve the efficiency of harvester reel and improve the shortcomings of existing eccentric reel. a new device of gear- cam modular reel is presented. By a combination of gear and cam. through changing the reel speed in the rotation process and tine head vertically into the ear to improve reel efficiency. https://www.nacrack.com/hot-savings-HiBoost-Home-15K-Smart-Link-F20G-5S-IoT-limited-super/