An electric stepper includes a base having a rotation shaft, a pivot and a post an upright rod fixed on the post a main seat mounted on the base, having a tube sheathing on the rotation shaft and a horizontal shaft a left support on the left of the horizontal shaft a right support on the right of the horizontal shaft a left link, two ends of which are separately connected to the front of the left support and a left crank a right link, two ends of which are separately connected to the front of the right support and a right crank a rocker arm pivotally fixed on the pivot of the base and connected to the left crank a bearing set connecting between the left crank and right crank and having a driven wheel and a gear box at the rear end of the main seat and having a driving wheel for driving the driven wheel through a belt.
