Malassezia is a kind of skin fungus, then due to Malassezia infection caused by dandruff can be improved by general treatment, topical medication and oral medication, specific medication is recommended under the guidance of a doctor. 1. General treatment: Because of the infectious nature of Malassezia, it is recommended that patients pay attention to scalp hygiene and cleanliness in daily life, and sterilize pillowcases and towels if necessary. 2. Topical medication: patients can use ketoconazole lotion or selenium disulfide lotion to wash the hair and inhibit the reproduction of scalp fungi. 3. Oral medication: For the poor efficacy of topical medication, when the rash is widespread, oral antifungal drugs such as itraconazole can be taken as prescribed by the doctor. Malassezia infection caused by dandruff, it is recommended that under the guidance of a professional doctor for symptomatic treatment, the use of drugs need to comply with medical advice.