Color Doppler ultrasound generally uses autocorrelation technology for Doppler signal processing. The blood flow signal obtained by autocorrelation technology is color-coded and superimposed on a two-dimensional image in real time to form a color Doppler ultrasound blood flow image. Usually consists of probes (phased array, linear array, convex array, mechanical fan scan, 4D probe, endoscopic probe, etc.), ultrasonic transmitter/receiver circuit, signal processing and image display. Using ultrasound Doppler technology and the principle of ultrasound echo, our Color Doppler ultrasound machine simultaneously collects blood flow movement, tissue movement information and human organ tissue imaging.