Disclosed is an electric toothbrush, comprising: a handle； a drive element provided in the handle, an output shaft of the drive element extending out of the handle； a brush head disposed at one end of the output shaft remote from the handle and connected to the output shaft； and a stress triggering element and a stress detecting element, which are oppositely provided on surfaces of the output shaft； wherein the stress triggering element is configured for producing stress concentration at the position where the stress triggering element is located when the output shaft motions； and the stress detecting element is configured for detecting the stress at the position where the stress triggering element is located, thereby obtaining a pressure corresponding to the stress, the electric toothbrush as provided offers a simple structure for pressure detection.
