Black dots on the ears may clinically represent the following diseases; 1, black pigmented nevus, this condition is related to genetic inheritance, such patients may have black dots on their ears when they were first born, i.e. black pigmented nevus, which may grow larger due to acquired factors such as friction and other stimuli, but the growth will be slower, usually rarely break out, and will not bleed, and there is no abnormal local performance; 2, melanoma, which is not very common, Melanoma, melanoma is not very common clinically, this kind of it is very similar to dark pigmented nevus in form, but it will grow more rapidly, and there may be local performance such as erosion, rupture and bleeding. Some patients even include the appearance of surrounding cartilage destruction and even lymph node enlargement. In this case, if the patient suspects that the growth of the black spot is relatively rapid, the scope increases very fast, and there is local infiltration and other manifestations, clinically you can do the black spot excision surgery, mainly to clarify the nature and exclude the possibility of melanoma, because melanoma is a malignant tumor, clinically there are metastases and other possibilities.