Seborrheic dermatitis is a chronic papular and scaly superficial inflammatory skin disease that occurs in areas where sebum is secreted and may be accompanied by varying degrees of itching. Its treatment generally includes three aspects. The first is topical medication treatment, which primarily focuses on degreasing, anti-inflammatory, antibacterial, and anti-itch properties. Common medications include tacrolimus, pimecrolimus, compound miconazole cream, compound econazole cream, zinc oxide oil, furacyclin ointment, boric acid zinc oxide menthol ointment, etc. For the scalp, shampoos containing ketoconazole, selenium sulfide, or salicylic acid can be used. The second aspect involves oral medication, generally supplementing with vitamin B2, B6, compound vitamin B, or zinc-containing preparations. Antihistamines may be used when itching is severe, erythromycin or tetracycline for bacterial infections, and oral itraconazole for fungal infections or widespread lesions. The third aspect is to advise patients to maintain regular living habits, get enough sleep, regulate their diet, limit polysaccharides and high-fat diets, avoid spicy and stimulating foods, reduce alcohol consumption, and eat more vegetables and fruits, avoiding various mechanical irritations.