The invention discloses a continuous wave velocity radar. The continuous wave velocity radar includes a radar signal processor, a radio frequency front-end device, a receiving antenna and a transmitting antenna; the signal output ends of the radio frequency front-end device are respectively connected with the signal input end of the radar signal processor and the signal input of the transmitting antenna; and the data output end of the receiving antenna is connected with the signal input end of the radio frequency front-end device. The continuous wave velocity radar of the invention is mainly applied to the road traffic speed measuring field. According to the continuous wave velocity radar, the radar signal processor, the radio frequency front-end device, the receiving antenna and the transmitting antenna are combined with each other, and an electronic police system is used in cooperation, and therefore, the continuous wave velocity radar can detect actual speed of each passing vehicle real time and compare the actual speed with a speed limit value, so as to provide references for the detection and location of overspeed vehicles and can assist in effectively realizing low power consumption and low cost.