AVH-1400 is a unique design and multi-function UAV helicopter for air photograph or another air mission. It used the multi-blades to provide the huge lift with low revolution rpm and high efficiency control than normal two blades. Cyclic and collective pitch control actuators are all integrated in the helicopter mechanism system. UAV helicopter had more benefit than fixed wing UAV, it can hover on the air in the same height and position to do the air job. AVH-1400 is powered by electrical power system with low noise and vibration. It can do the continue fly with rechargeable Li-Po battery packs change, each battery sets fly can reach 30_50minutes depend on payload and battery capability. The maximum take-off weight can reach 20kg with 10kg payload. It had a big space for 3 axis gimbal or another device under landing skid, the 3 axis gimbal system can load 6kg TV camera or another type camera.