The invention relates to the technical field of medical device, in particularly relates to a clinical fetal heart detector in gynecological and obstetrics, which comprises a first housing, a display screen, a processor, a wireless transmission module, a second housing, a seal cushion, a tiny fan, a detection end, a vent hole, a first connection belt, a fastener, a box body, a shaft, a knob, a fixed coil and a second connection belt. In the process of using, the display screen is capable of displaying the heart rate of a fetus. Moreover, the wireless transmission module is capable of transmitting the data measured by the detection end to an intelligent device connected with the clinical fetal heart detector in gynecological and obstetrics via wi-fi, and then nurses or the family members ofthe pregnant women at remote place are convenient to view the data; furthermore, based on the design of the connection belt of the clinical fetal heart detector in gynecological and obstetrics, the device is convenient to fix on the abdominal of pregnant women, and the connection belt can be adjusted freely via the shaft which brings convenience to pregnant women; moreover, the design of fan withthe vent hole guarantees the ventilation of the skin of pregnant women contacting the detection end, and the blood circulation of the surroundings is accelerated.