Solar labyrinthitis, also known as photochemical labyrinthitis, can be treated with medication, which is divided into local medication and systemic medication, as follows. 1. Local drug treatment: use sunscreen with the function of absorbing and reflecting light, such as 3% hydroxychloroquine ointment, 5% titanium dioxide ointment, in order to reduce the damage of ultraviolet rays on the skin and mucous membrane of the lips. For dry and flaky type, Vitamin A acid can be used locally. 2. Systemic medication: use niacinamide, which can improve the peripheral blood circulation disorder. P-aminobenzoic acid can prevent light. Vitamin B complex can reduce skin inflammation and promote the growth of skin mucosa. The above drugs should be used under the guidance of a doctor, and it is recommended to go to the hospital in time to receive professional treatment as soon as possible.