When a huge cyst in the apical area is drained, it is generally recommended to take open-pulp drainage, and then clean up the secretion inside, and carry out root canal preparation and root canal disinfection. Regarding the huge cyst in the apical area, you can choose to drain the abscess by opening the pulp, so that the fluid secretion inside the capsule will be reduced, and then carry out root canal preparation, root canal disinfection, and inject drugs into the apical area, which can directly eliminate the cyst. For larger apical cysts, drainage is not effective. This type of patient is usually recommended to choose apical surgery, i.e., gingival incision and flap, open window to expose the root apex, resection of part of the root apex and cyst, and apical inverted filling. If a large apical cyst is detected, it is recommended to consult a doctor in time and choose regular treatment under the guidance of a professional physician, taking into account the severity and progress of the disease.