There are many reasons for cold sweats and vomiting: 1. Cerebrovascular diseases, if the patient usually has high blood pressure, taking antihypertensive drugs will produce low blood pressure, and the patient will experience cold sweats and vomiting. 2. Gastrointestinal diseases, such as acute gastritis and gastric ulcers, stomach tumors, etc., especially in the state of hunger, there will be cold sweats and vomiting. 3. Infectious diseases, such as 4, hypoglycemia, hypoglycemia is also accompanied by panic, rapid heart rate, and may lead to coma. 5, eat spoiled, rotten and contaminated food, will also lead to cold sweats and vomiting. No matter what the cause is, if the situation is serious, you should go to the hospital for timely treatment.