The invention provides a helmet provided with an elastic sensor. The helmet comprises a helmet body with an inner side surface, and further comprises the elastic sensor, wherein the elastic sensor comprises an elastic frame and a sensing unit; the elastic frame has a top end and a bottom; the sensing unit is positioned at the top end of the elastic frame, and is used for being adhered to the skin of a user so as to sense physiological parameters of the user; the bottom of the elastic frame is fixed to the inner side surface; after the top end of the elastic frame is pressed, the elastic frame is elastically pressed towards the bottom. The helmet provided with the elastic sensor, provided by the invention, is applicable to an outdoor exercise during which the helmet is required to be worn, so that additional measurement equipment is not required to be carried; the sensor has the elastic frame, so that the helmet provided with the elastic sensor is comfortable to wear.