Corns can be removed by needle picking method, medication and physical therapy. 1. Needle picking method: After sterilization, a professional will use a sterilized cosmetic needle to pick the surface of the papule and squeeze out the yellowish-white granules. It is suitable for patients with single or small number of papules. After the operation, it is necessary to pay attention to sterilization and keep the affected area clean and hygienic to avoid infection. 2. Medication: Reduce the hyperkeratosis of the skin to avoid the increase of papules. Common medicines such as retinoic acid ointment are suitable for widespread papules, acne vulgaris and all kinds of keratinization abnormalities. 3. Physical therapy: carbon dioxide laser is commonly used for clinical treatment. Through photothermal effect, the laser acts on the skin lesion tissues, rapidly destroying and vaporizing them to remove them. Patients who have the need to remove cornu rashes are advised to go to the dermatology department of regular hospitals for consultation and symptomatic treatment under the guidance of professional doctors.