S-70 remote-piloted simulation aircraft is a cost-effective and widely used target drone, with the functions of GPS navigation, fixed course flight, low-altitude flight, etc. This target drone can be equipped with many kinds of task equipments such as tracer tube. We have produced more than ten thousand S-70 target drones, and exported them to Indonesia, Algeria, etc. With the capabilities of auto-pilot and preprogrammed course, S-70 target drone provides an effective means for actual combat training of air defense weapons.