The majority of hard bags on the neck need to be surgically removed to obtain a cure. In clinical practice, hard pockets on the neck are mainly seen in the following diseases: 1. lipoma. If the ultrasound confirms that it is a lipoma, it can usually be cured by local anesthesia and complete excision. 2. Sebaceous cysts. Sebaceous cysts may develop secondary to bacterial infection, causing localized redness, swelling, heat and pain, and even abscess formation. It can be cured by complete excision under local anesthesia. 3. Thyroid nodules or thyroid adenomas, or even thyroid cancer. Further ultrasound examination is usually needed to clarify the diagnosis. For grade 4 or above and diameter more than 1.5 cm, the thyroid gland is usually removed and sent to freezing directly. If thyroid cancer is confirmed, radical thyroid cancer surgery with postoperative chemotherapy is usually required.