An embodiment of the invention discloses mobile equipment and a barrier information prompting method and device based on the mobile equipment. The method includes: acquiring barrier data detected by an ultrasonic sensor arranged in the mobile equipment; determining whether to acquire a barrier image or not according to the barrier data; if so, generating barrier information according to the barrier data and the acquired barrier image, and prompting. By the arrangement, the method has the advantages that a barrier is prejudged according to the barrier data detected by the ultrasonic sensor, the barrier image is acquired through an image acquisition device if the barrier image needs to be acquired, the comprehensive barrier information can be provided for users while energy consumption is reduced, a pedestrian can conveniently acquire the barrier information timely under a condition that the barrier in front cannot be seen and avoid the barrier, convenience is brought to the pedestrian, and the user experience of the mobile equipment is improved at the same time.