When a pregnant woman is hungry, she feels like throwing up, which is usually related to the hormone levels in her body and is usually a normal phenomenon. When a woman is pregnant, her hormones will rise dramatically. When estrogen levels rise in a woman’s body, it may lead to water and sodium retention in her body, which may result in slight edema of the mucous membranes of her gastrointestinal tract. When a pregnant woman is in a state of hunger, because the stomach is empty, may lead to gastric mucosa friction, which leads to pregnant women to vomit when hungry symptoms. Therefore, it is recommended that pregnant women should pay attention to multiple meals in order to avoid nausea, vomiting and other symptoms due to hunger. If the symptoms of vomiting due to hunger are more serious, it is recommended to go to the hospital for further examination.