For how to hold urine for gynecological ultrasound, you can take the following approaches: 1. You can drink a lot of water and take diuretic fruits orally at the same time, like watermelon, pineapple, tomatoes, etc., which can make urine produced quickly to achieve the purpose of holding urine for gynecological ultrasound. 2. You can take diuretic drugs orally or intramuscularly after drinking a lot of water, like furosemide, which can produce the feeling of holding urine for gynecological ultrasound. 3. You can use intravenous infusion and In very extreme cases, saline can be injected into the bladder after an indwelling urinary catheter to achieve the purpose of quickly holding urine for gynecological ultrasound.