Head always have odor may be physiological factors, such as cleaning is not in place, etc.; may also be pathological factors, such as seborrheic dermatitis, ringworm and other diseases caused by medication, improve lifestyle habits and other methods to improve the situation. 1. Physiological factors: common such as cleaning is not in place, when the patient scalp secretion of oil and external dust and other substances for a long time without cleaning, can breed bacteria and thus produce odor. It is recommended that patients wash their hair diligently and at shorter intervals to alleviate this symptom. 2. Pathologic factors: (1) Seborrheic dermatitis: it is a common chronic superficial, inflammatory skin disease. Patients may have greasy yellow or brown scabs, accompanied by vesicles, oozing, and exuding the odor of sebum decomposition. The scalp can be washed externally with ketoconazole lotion, selenium disulfide lotion, etc., and antihistamine such as oral loratadine can also be taken for treatment. (2) Tinea capitis: it is an infectious disease caused by dermatophytes infecting the scalp and hair, especially tinea cruris, which can be accompanied by a special rat odor. The disease is prevention-oriented, should avoid contact with the clothing of ringworm patients, avoid contact with sick animals, etc., can be applied to itraconazole, terbinafine, fluconazole, ashwagandha, etc. antifungal infection treatment, these drugs can effectively kill the fungus, so as to alleviate the symptoms. It is recommended that patients with head odor always go to the hospital in a timely manner, in accordance with the doctor’s instructions for standardized treatment after a clear diagnosis, to avoid delaying the condition.