Thumbtack Needle in the Treatment of NVP

Inclusion Criteria: * The mother\&#39;s age is 20 \~ 45 years old, the gestational age is 6 \~ 12 weeks, and the ultrasound confirms that it is an intrauterine single or multiple pregnancy, and the weight loss is less than 10% compared with before pregnancy. * Women diagnosed with moderate to severe NVP in the first trimester: the severity of NVP was determined by the PUQE score (see Table 1), and the PUQE score ranged from 3 \~ 15, \< 6 was mild NVP, 6 \~ 12 was moderate NVP, and ≥13 was severe NVP. PUQE score ≥ 6 may be included in this study. * Women voluntarily sign the informed consent form. Exclusion Criteria: * Age \>20 years, and \<45 years. * Gestational \> 6 weeks, or \<12 weeks. * PUQE score \<6. * frequent nausea and vomiting, weight loss of \>10% compared with before pregnancy; or symptoms such as listlessness, paleness, dry skin, sunken eye sockets, and a marked decrease in urine output (less than 400ml of urine in 24 hours or less than 5 times and a small amount of urine in 24 hours). * At rest, body temperature \> 38°C, systolic blood pressure \< 90 mmHg or \> 140 mmHg, diastolic blood pressure \< 60 mmHg or \> 90 mmHg, heart rate ≥ 100 beats per minute, or oxygen saturation \< 95%. * Urinalysis: urine ketones: +++ and above; or (and) urine protein: ++ and above. * Blood biochemistry: serum potassium≤3.0mmol/L, serum sodium≤130mmol/L; or abnormal liver function: elevated liver enzymes ≥ 2 times the upper limit of normal; or renal dysfunction: elevated serum…