Nausea and vomiting in new pregnancy is considered to be early pregnancy reaction, which is a normal phenomenon. During a woman’s first pregnancy, the increase in estrogen and progesterone in the body and the increase in human chorionic gonadotropin can cause an early pregnancy reaction, which is a normal phenomenon. In addition to nausea and vomiting, it may be accompanied by dizziness, fatigue, loss of appetite, aversion to grease, flatulence, constipation and other early pregnancy reactions. Usually, early pregnancy reaction appears around 6 weeks of pregnancy and decreases until it disappears around 3 months of pregnancy. For some pregnant women with twin pregnancies, the early pregnancy reaction may be more obvious due to the significant increase in hormone levels in the body. Newly pregnant women are advised to adjust their mindset, pay attention to regular medical checkups, and ensure a balanced intake of nutrients and rest on a daily basis.