Stool with automatic height adjusting function

The invention discloses a stool with an automatic height adjusting function. The stool comprises a base, a lifting device, a lifting control module and a stool surface and is characterized in that an image collection device is arranged at the edge of the stool surface, used for collecting a knee joint image of a user and connected with an angle analysis module; the angle analysis module is used for identifying the angle of the knee joint image and outputs an angle signal to the lifting control module; and the lifting control module controls the lifting device to work for rising and falling of the stool surface according to the angle signal. The image collection device collects the knee joint image of the stool user, the bending angle of a knee joint is identified through the image identification technology, and accordingly whether the height of the stool is adaptive to the height of the user is judged; and then the stool is adjusted automatically to the suitable height through the lifting device, and thus the