Scalp odor may be caused by not paying attention to hygiene, seborrheic dermatitis, ringworm of the head and so on. 1. Not paying attention to hygiene: if you don’t wash your hair often, it will lead to excessive oil and dirt mixing together in your hair, and then the odor will appear. 2. Seborrheic dermatitis: it is a relatively common chronic inflammatory skin disease, due to the secretion of a large amount of sebum, not timely clean up, it will easily lead to odor on the scalp. 3. ringworm: mainly fungal infection caused by a skin infectious disease, often with a special flavor, accompanied by itching, hair loss and other symptoms. Scalp odor if the symptoms are still not relieved after cleaning, you should go to the hospital in time, with the doctor to identify the cause of targeted treatment.