The technical term of "sublingual embolectomy" is "sublingual bloodletting" in bloodletting, and the interval depends on the actual situation of the patient. If the blood released by the patient is no longer a clot, there is no need to bleed, and even if there is blood, there will not be much blood. If the patient's condition is serious, he can be bled again after one month. If bloodletting is generally needed, the interval is about 1-2 months. It is recommended to maintain health.