The invention discloses a three-coordinate radar technology based civil VAV capturing technology and a system thereof. The technology comprises that a three-coordinate radar technology is used to detect exotic objects in the air rotationally according to certain detection manner, a target signal is obtained, and the width of an orientation wave beam emitted during detection is greater than the width of an elevation angle wave beam; the target signal is received and processed to obtain and send a pre-processed signal; the pre-processed signal is received, digital processing is carried out on the pre-processed signal, and a distinguishable digital signal is obtained and sent; the digital signal is received and decoded to obtain a decoded signal; and the decoded signal is analyzed and determined, if the decoded signal is a UAV signal, a tracking and locking instruction is sent, and otherwise, rotary detection is continued. According to the three-coordinate radar technology based civil VAV capturing technology and the system thereof, the exotic objects in the air are searched, tracked and locked, the capturing range of the exotic objects in the air is increased, the speed is high, and the scanning range is wide.