Brown spots on the skin of the clavicle may be caused by hyperpigmentation, seborrheic keratosis and ringworm. It can be removed by medication, physical therapy and other methods. 1. Hyperpigmentation: it is the pigmentation formed due to the increase of melanin in the skin, and it is related to sun exposure, hormone level change, and staying up all night. Can take vitamin C, with external application of vitamin E milk. If it seriously affects the aesthetics, physical methods such as laser treatment can be taken. 2. Seborrheic keratosis: mostly related to skin aging and long-term sun exposure. It can also lead to brown spots on the skin at the collarbone. Usually use physical therapy such as freezing, laser and other methods. 3. Ringworm: brown spots on the skin of the collarbone may be caused by fungal infection of ringworm, which can be treated with oral medication and topical medication. In the local smear antifungal ointment such as compound ketoconazole ointment, at the same time take terbinafine hydrochloride tablets, itraconazole capsules and other drugs for treatment. When there are brown spots on the skin of the clavicle, it is recommended to go to the dermatology department of the hospital in time to clarify the cause of the disease and standardize the use of drugs under the guidance of the doctor.