The generic name of Hai Fu Knife is Focused Ultrasound Tumor Therapy System, and you need to take laxatives to do Hai Fu Knife. Focused Ultrasound Tumor Therapy System is a high-intensity focused ultrasound therapy, which can be used for the treatment of benign and malignant solid tumors. In order to guarantee the safety and efficacy of Focused Ultrasound Tumor Therapy System, there are strict requirements for the preparation of the intestines. Generally, only glucose water or plain water is drunk 1 day before the treatment of Focused Ultrasound Tumor Therapy System, and laxatives are drunk at 3:00 p.m. (watered down to 1500 ml, finished in 1 hour). After drinking it, you also need to drink a lot of water (more than 1000 ml), and fasting and abstaining from food and drink after 10 pm. The technology is currently applicable to the treatment of solid tumors, including bone tumors, soft tissue tumors, uterine fibroids, uterine adenomyosis, breast tumors, pancreatic cancer, kidney tumors, liver tumors, benign prostatic hyperplasia and prostate cancer, and solid tumors of the retroperitoneum or abdominopelvic cavity. Patients should choose the appropriate treatment under the guidance of the doctor, choose the focused ultrasound tumor treatment system to actively cooperate with the doctor, listen to the doctor’s advice, and make good bowel preparation.