Fetal hiccups occur occasionally, and in most cases they are weak and not easily detected by the mother. Fetal hiccups that can be detected or felt by the mother are similar to adult hiccups. Because many fetal movements in the womb are involuntary and the fetal tissues and organs are not yet fully developed, but the fetus can eat, drink and excrete in the womb, so a small percentage of fetuses may also experience hiccups. When a fetus hiccups, most of the hiccups felt by the mother are as regular as those felt by adults, and can be felt by placing a hand on the belly. After a period of time, many of these hiccups are relieved and do not have a significant impact on the fetus. Of course, if the mother can feel the hiccups regularly, it is advisable to go to the hospital for a checkup to make sure that there are no obvious abnormalities in the fetus, and then continue to observe. Therefore, if the fetal hiccups are not particularly obvious or do not last for a long time, the mother will not feel them, but if the fetal hiccups last for a relatively long time and the mother observes them carefully, they can be felt, and the fetal hiccups are the same as those of adults.