Microwave ablation needle detection device and microwave ablation therapeutic instrument thereof

The utility model discloses a microwave ablation needle detection device and a microwave ablation therapeutic instrument thereof, which relate to a device for detecting the output microwave power of a microwave ablation needle and the microwave ablation therapeutic instrument provided with the detection device. The microwave ablation needle detection device comprises an antenna, a frequency selection filter circuit, a microwave signal amplification circuit, a signal detection circuit, a processing and output circuit and a power supply protective circuit, wherein the antenna receives microwave signals radiated from the microwave ablation needle point, and the microwave signals are filtered by the frequency selection filter circuit, amplified by the microwave signal amplification circuit, detected by the signal detection circuit in amplitude value, and finally displayed by the processing and output circuit and prompted through buzzing. The utility model is mainly applicable in detecting the microwave power output state of the microwave ablation needle in the microwave ablation therapeutic instrument in a fast and non-contact manner.