If there is a hard lump under the cheek, it most often still originates from a lesion of the parotid tissue, either a simple parotid tumor or a mixed tumor, which in most cases is a benign lesion. The patient’s main symptom is the discovery of a localized swelling, mainly below the earlobe, which can be painful. Mixed tumors of the parotid gland can also become malignant, and the most effective treatment is surgery, as it is highly unlikely that this disease will go away on its own. The operation is very important, mainly to avoid any damage to the facial nerve and its branches, which can lead to facial paralysis after the operation. In addition, the free parotid duct should be carefully defined and ligated during the operation to avoid the occurrence of parotid fistula after the operation, and after the operation, infection should be routinely prevented and localized pressure bandage should be applied.