Whether or not you can play with your cell phone when performing fetal heart monitoring in late pregnancy depends on the state of fetal heart monitoring, which is mainly divided into the following two situations: 1. You can play with your cell phone: a fetal heart monitoring takes about 20 minutes, and sometimes the fetus is inactive, and even needs to be monitored twice, which is 40 minutes, which is a long time, and the pregnant woman may be more bored, so if the fetal heart monitoring is good in terms of variability and normal in terms of baseline, the pregnant woman can appropriately play with the cell phone. First of all, there is no problem in the technical level, playing with cell phone will not affect the monitoring instrument. Secondly, appropriate play cell phone can make pregnant women relax, transfer attention, to avoid too nervous and make the monitoring results inaccurate; 2, do not recommend playing cell phone: if the fetal heart monitoring is relatively flat, there is no fetal movement performance, at this time it is not recommended to play cell phone. It is recommended that pregnant women choose to lie on the side or sit up, through appropriate activities or shaking the abdomen, eating and other ways to stimulate the fetus, prompting the fetus to move in the uterine cavity, so that the baseline of the fetal heart shows a certain degree of variability, and make clear that the fetus is in the uterine cavity, so that it is more conducive to obtaining accurate test results.