The fetal monitor is mainly structured by a fetal heart rate recorder and a uterine contraction recorder. It is a measurement equipment that can depict the pattern of fetal heart activity, according to the ultrasound Doppler principle therapy and electricity flow changes of a fetal heartbeat. This monitor device provides efficient support to make pregnant women relieved. This model is designed to provide continuous monitoring, displaying, and record of FHR, as well as the test of antenatal UA. And it is often used by trained paramedics in hospitals, clinics, consulting rooms, and homes. It is a non-invasive measurement antenatal monitoring system. It shows UC and FHR via waveform and chart, and record data in a recorder with a strip chart. These data can provide assistance in the assessment of the health status before delivery.