A sliding lump on the cheek can be registered with head and neck surgery or oral surgery. A sliding lump may be a lipoma, which is a benign tumor composed of mature adipose tissue, usually occurring singly, regular shape, clear margins, smooth to the touch, intact, sliding, and not adherent to the skin, and there are no symptoms, rarely malignant, and can be surgically removed. It may be a simple enlarged lymph node, which can be secondary to oral infection or gum infection, and at the same time, there is local lymphatic reaction hyperplasia and swelling, and there will be pain, or even fever, in which case, it can be referred to the oral surgery department for further specialized treatment. Mixed tumors of the parotid gland can also be seen, which are also benign tumors, but may become malignant if they are not treated in time. Usually, the doctor will recommend further examination such as ultrasound or puncture to clarify the condition.