Early pregnancy reaction, ultrasonography and the level of chorionic gonadotropin in the blood can be used to determine whether or not it is a gravidarium. 1. Early pregnancy reaction: Generally speaking, in the early stage of pregnancy, patients with hyperemesis gravidarum have a greater chance of vomiting compared with pregnant women with normal pregnancy, and their early pregnancy reaction such as gastrointestinal reaction is obviously stronger than normal early pregnancy reaction, so they can judge whether it is hyperemesis gravidarum or not by the early pregnancy reaction of vomiting and so on. 2. Ultrasonography: ultrasonography can be used to check whether it is a hyperemesis gravidarum, if it is a hyperemesis gravidarum, the normal embryonic tissues can hardly be seen under the ultrasonography, and the accuracy rate is relatively large. 3. Blood chorionic gonadotropin level: The blood chorionic gonadotropin level is abnormally high in hyperemesis gravidarum compared to normal pregnancy, whereas the blood chorionic gonadotropin level increases slowly in normal pregnancy. If you want to know whether it is hyperemesis gravidarum or not, it is better to consult a doctor in time and make a judgment after completing the relevant tests under the doctor’s guidance.