Promoting the embedding of small and micro portable drones into the battlefield has become one of the distinctive features of equipment development and use in various countries. In January of this year, Elbit Company in the UK announced the acquisition of a new contract. According to the contract, the company will deliver a batch of Magni-X mini UAVs to the British Ministry of Defence in a few months to "enhance the capabilities of the British Army". At the end of November last year, the US Army released a solicitation letter on the Federal Procurement Network related to the development of patrol missiles. One of its contents was to seek small and micro unmanned aerial vehicles with a payload of more than 0.5 kilograms to be used to launch active individual throwing ammunition. Russia is also following up in this regard. It is said that the UAV Capability Center of the Novosibirsk National University of Technology is benchmarking the "Black Bee" micro drone developed by Norway and developing the "Bumblebee" micro drone. Starting from January this year, the South Korean Special Operations Force began deploying externally purchased "Rotem L" drones, which weigh about 6 kilograms and are designed to be portable. The Drone-40 unmanned aerial vehicle launched by Australia's Defence Tex Company is small enough to be launched with a grenade launcher and can perform battlefield reconnaissance and strike missions. Serbia is upgrading the reconnaissance type micro unmanned aerial vehicle "Sparrow" to equip it with the ability to carry and use grenades. Why do countries attach so much importance to the development and installation of small and micro portable unmanned aerial vehicles? What are the unique advantages of this type of drone? What are their current development status and future directions? In this issue of 'Weapon Wide Angle', let's get closer to this type of equipment. LANIUS mini quadrotor UAV. Yangming provided a picture of the "Anafi Parrot" drone. The Drone-40 unmanned aerial vehicle provided by Yangming. Yangming presented a scene in the movie "Eye of the Sky" where he stands with the concept of "every inch has its own strengths". There is a scene where a miniature drone in the shape of a beetle takes off from a flat control panel screen, travels all the way through a tent, bypasses a corner, flies into the house, stops on the beam of an open roof truss, and begins filming the situation inside... The reason why this scene is impressive is that, Because it vividly demonstrates the functions of micro drones such as "covert entry" and "unobstructed view of the target". The size of a sparrow, able to freely navigate indoors and transmit images while flying... similar small and micro drones have become a reality. Since the concept of micro unmanned aerial vehicles was proposed in the 1990s, the development of micro unmanned aerial vehicles has received attention from many countries. The traction of operational requirements and changes in operational concepts, especially the higher requirements for environmental perception in special operations, have gradually led to the "rapid growth period" of small and micro portable unmanned aerial vehicles. The United States, Israel, Norway, the United Kingdom, Australia and other countries have made progress in this regard. Compared with large, medium, and some small unmanned aerial vehicles, small and micro portable unmanned aerial vehicles are relatively small in size, weak in carrying capacity, and have a shorter range due to their easy portability requirements. However, the above shortcomings clearly did not stop the enthusiasm of countries for its development and use. One of the reasons is that due to the "small benefits", small and micro portable drones have achieved their strengths on the basis of "every inch has its strengths", and make their strengths longer. Ling