A sebaceous cyst is also known as a sebaceous cyst. Generally, people with sebaceous cysts are surgically removed in regular hospitals, which removes a piece of skin and definitely leaves scars. At present, I use a minimally invasive method that works quite well, without removing the skin and with only one or two stitches. Operation method: First, a fine needle for local infiltration anesthesia, a very fine needle can be infiltrated very precisely, with very little local anesthetic, to avoid a lot of local local anesthetic, resulting in local tissue edema, which is not conducive to the operation. In the second step, an approximately 2 mm incision is made from the skin of the surface of the powdery tumor using an 11-gauge sharp blade, and the gap between the skin and the powdery tumor is peeled off with ophthalmic scissors to puncture the wall of the powdery tumor capsule and release as much of the tofu-like material inside as possible. The third step is to use pointed tweezers to enter the follicle through the widened pore, and forcefully flick out the cyst wall of the sebaceous gland, which is a bit difficult to do and requires a very good touch. Local pressure is applied to stop the bleeding for a few minutes and one or two sutures are placed. This scar is very small, and the scar is essentially invisible after healing. However, this surgical method is somewhat selective and is generally only suitable for facial cystic wall stable powdery tumors and not for those with certain painful infections.