LEEP knife, in reality, is a gynecological scalpel for circumferential electrosurgery. It uses various forms of high-energy electrodes to reach the lesion directly, and under the action of high-temperature electrical energy, it can quickly and precisely remove the diseased tissue, with automatic coagulation of the incision, minimal bleeding, short operation time and little damage, making it an excellent choice for treating cervical diseases. LEEP can be done by two kinds of electric knives, one is the ordinary high frequency electric knife and the other is the high frequency radio frequency electric wave knife. These two types of electric knives can achieve the requirements of the procedure, but the results after the procedure are very different. The ordinary high-frequency electric knife is more damaging to the tissues, with more bleeding, longer recovery time after surgery and more complications. In contrast, high-frequency radiofrequency electrosurgery uses the principle of radiofrequency waves to perform the surgery. It can achieve a very fine surgical effect that cannot be achieved by ordinary high-frequency electric knife: the tissue pulling and charring phenomenon of ordinary high-frequency electric knife will not occur; intact tissue specimens that do not affect pathological examination can be obtained; there is little damage to neighboring tissues; pain is reduced and there is less chance of scarring and fewer complications.