Method of obtaining fetal heart rate and terminal

Provided is a method of obtaining a fetal heart rate, comprising: sending an ultrasonic pulse wave to the abdomen of a pregnant woman according to a pre-set period (110); receiving the corresponding pulse echo and fetal cardiac echo according to the ultrasonic pulse wave of each period, and respectively processing the pulse echo and fetal cardiac echo to obtain the corresponding pulse rate of the pregnant woman and the fetal heart rate (130); and outputting the fetal heart rate according to the judgement result when the difference between the fetal heart rate and the pulse rate of the pregnant woman is not smaller than the pre-set threshold value (150). In addition, also provided are a system and a device for obtaining the fetal heart rate. The method of obtaining the fetal heart rate and the terminal increases the degree of accuracy of obtaining the fetal heart rate.