Unmanned Aerial Vehicles (UAV) based delivery of goods could become a reality soon. At present drones can be used in a wide range of commercial applications, surveillance, video shooting, border security, etc. UAVs based payload delivery drones can be used to deliver goods from one point to other. The advantages of a Payload delivery Drone system are mainly related to an increased delivery speed, especially in urban cities with traffic, where it is difficult to make deliveries on time. This system also helps to reduce the overall carbon footprint. This Review paper Discuss various works done in this field.