Unmanned Aerial Vehicles (UAVs) like drones and quadcopters have revolutionised flight. They help humans totake to the air in new, profound ways. The military use of larger size UAVs has grown because of their ability to operate indangerous locations while keeping their human operators at a safe distance. Here quadcopter as a small UAV is discussed.It is the unmanned air vehicles and playing a predominant role in different areas like surveillance, military operations,fire sensing, traffic control and commercial and industrial applications. The main objective of the paper is to learn thedesign, construction and testing procedure of quadcopter. In the proposed system, design is based on the approximatepayload carry by quadcopter and weight of individual components which gives corresponding electronic componentsselection. The selection of materials for the structure is based on weight, forces acting on them, mechanical propertiesand cost.