There are more reasons for strong pregnancy vomiting in the afternoon, which may be caused by hormonal influence, dietary habits, physical factors, diseases, etc., as follows: 1, hormonal influence: after pregnancy, due to changes in the body’s hormone levels, mainly increased secretion of chorionic gonadotropin, progesterone and estrogen in the blood, these hormones stimulate the gastrointestinal tract, affecting gastrointestinal peristalsis, which leads to indigestion, nausea and vomiting symptoms. Pregnant women may have a psychological implication effect if they have pregnancy reactions many times in the same time period; 2, dietary habits: due to the influence of dietary structure, most people eat relatively more and greasy food at noon, so pregnant women may have indigestion after eating, if they do not exercise to eliminate food after eating and lie down directly in bed, it may lead to food gathering in the gastrointestinal tract, thus making pregnant women uncomfortable in the afternoon; 3, physical factors: due to the influence of each person, most people eat relatively more and greasy food at noon, so pregnant women may have indigestion after eating. Some pregnant women have strong vomiting in the morning after waking up or after eating breakfast, while some other pregnant women have strong vomiting in the afternoon after eating or before going to bed, which is related to their physique, so there is no need to be too nervous; 4, disease factor: if you have strong vomiting in the afternoon, you must go to the hospital to exclude gastrointestinal diseases and liver diseases caused by violent vomiting.