Small red dots on the legs with no pain or itching may be related to cherry angioma, idiopathic thrombocytopenic purpura and other causes. 1. Cherry hemangioma: When cherry hemangioma appears in the body, painless papules may appear on the skin, elevated on the surface of the skin. 2. Idiopathic Thrombocytopenic Purpura: Due to the decrease in platelets, the bleeding of the skin is not easy to stop naturally, and there may be painless red dots on the legs with the size of bean grains that are not itchy. It is recommended that there are small red dots on the legs and painless and itchy may also be other reasons, should go to the regular hospital in time, clear causes, standardized treatment under the guidance of the doctor, so as to avoid delays in the condition of the body to bring about adverse effects.