The invention discloses a portable display device based on the Internet of things (IoT). The portable display device has a structure comprising a projector, an IoT receiver, a handle, a power connection protection cover, a carrying body, electric push rods and a support plate. The carrying body is a rectangular parallelepiped, four corners of the bottom end are inlaid and locked with electric pushrods and are electrically connected with the electric push rods, and the top end is fastened with the projector and is electrically connected with the projector. The number of the electric push rodsis 4, and the bottom ends are locked with the support plate. The IoT receiver is inlaid and glued to the upper side in the middle of the front end of the carrying body, and is electrically connected with the carrying body. The left and right sides of the handle are inlaid and locked with the carrying body. Gears, drawstrings, ejectors, springs and other mechanisms which are provided by the devicecan be used when the device is used, the device can be charged and carried when the device is in use, since the support rods and the projector for display can be retracted, the device is more convenient to carry, and the device is capable of adjustment of rotation and vertical angle and of anti-reverse locking, ensures the stable adjustment, and is easy to use.