Seborrheic dermatitis is a chronic papular and squamous superficial inflammatory skin disease that occurs in areas where sebum is secreted, and it can be accompanied by varying degrees of itching. Pregnant women diagnosed with seborrheic dermatitis are generally treated primarily with topical medications. It is advisable to choose mild, safe ointments with low irritability for external application. Safe antibiotic ointments, traditional Chinese medicine ointments, or ointments primarily for moisturizing and repairing the skin barrier can be used. Specific medications should be used under the guidance of a doctor. Additionally, pregnant women should be informed to maintain a regular lifestyle, get enough sleep, limit diets high in polysaccharides and fats, avoid spicy and irritating foods, eat more vegetables and fruits, avoid various forms of mechanical irritation, and use less hot water and strongly alkaline soaps for bathing.