A hard thing growing on the ear may be a keloid, sebaceous cyst, etc.. 1. Keloid: commonly found in ear piercing or extrusion and other stimuli caused by scar hyperplasia, pimple-like foreign body, hard texture, no pressure pain, no congestion, no special discomfort on weekdays, and occasionally unintentionally found when touching. Reduce the local stimulation of the keloid, and local radiation therapy after surgical excision for obvious enlargement. 2. Sebaceous cysts: the skin of the ear, such as sebaceous gland duct obstruction, causing sebum retention, resulting in the formation of cysts, the volume of small hours can be hard, can be active, no pain. Generally small, can be temporarily observed, cysts significantly larger feasible surgical treatment. It is recommended to consult a doctor in time for clear diagnosis and treatment of ear discomfort.