MESH handheld device is small and equipped with removable lithium battery. It can be held or carried on the shoulder, back or waist of an individual soldier. As a wireless extension and extension of the portable device, it is convenient to go into the scene of emergencies or crowded people, and send multimedia information such as high-definition video back in real time, so that commanders can directly control the scene situation in real time. At the same time, each individual node can also carry out multimedia interaction, to achieve efficient cooperation. The equipment is suitable for a variety of application scenarios such as local cooperative/emergent work of small teams, interconnection of high-rise or underground areas inside buildings, dense crowd and hidden work needs.