Summary of case history ,Patient Liu, female, 29 years old, went to the doctor on March 29, 2022 because of "nausea and vomiting at 14 weeks of pregnancy for more than 2 months, aggravating for 5 days". The patient developed nausea at 6 weeks of gestation, and was discharged from the hospital after improving with fluid support therapy in our hospital. After discharge, the patient suffered from repeated episodes of nausea and vomiting. The symptoms worsened 5 days ago, and he vomited more than 10 times a day, so he came to our hospital for treatment. Symptoms and signs: The patient looks indifferent, does not want to eat, vomits after eating, frequent belching, vomiting sputum with acid water, fullness of chest and diaphragm, backache, dizziness, no bowel movement for 3 days, less urination, lower abdominal pain, and a small amount of vaginal discharge Pink discharge, pale tongue with tooth marks, white coating, slippery pulse.,TCM diagnosis and syndrome ,Pernicious vomiting (syndrome of phlegm stagnation),Western medicine diagnosis ,1.Hyperemesis gravidarum with ketosis; 2.Threatened abortion; 3.Recurrent abortion,Therapeutic methods ,Traditional Chinese medicine to strengthen the spleen and phlegm, and stomach vomiting, give Chinese medicine decoction orally and acupoint application;Western medicine gave fluid support treatment to correct electrolyte disorder.,Clinical outcomes ,Nausea and vomiting did not recur after treatment and the patient resumed eating. After 31 weeks of gestation, the body weight increased by about 15 kg compared with that before pregnancy. Routine prenatal examination showed normal embryo development, urine routine, liver and kidney function, and electrolytes were within normal range.