1. Avoid direct sunlight: Patients with SLE should avoid being exposed to direct light containing ultraviolet rays, including sunlight, photocopiers, welding, etc., regardless of whether they have a rash. Try to avoid going out from 10:00 am to 3:00 pm when the sunlight is strongest. For prolonged outdoor activities, sun protection measures should be taken, such as applying sunscreen with SPF 25 or higher, wearing a hat, umbrella, and long-sleeved clothes. 2. Avoid using cosmetics: Patients with obvious erythema on the face should not cover it with cosmetics, because some cosmetics contain chemical reagents, especially chemicals with aromatic amines, which can aggravate the rash or induce lupus. Although there is no direct evidence to prove that it can induce lupus, a considerable number of patients have permed and dyed their hair some time before the onset of lupus. 3. Prevent colds and avoid overexertion: Pay attention to keeping warm in the cold season, wear hats and masks when going out in winter to avoid getting cold and minimize colds, etc., because infections can trigger lupus activities or aggravate the original condition. 4. Daily diet: The diet of lupus patients with mild disease usually does not need to be contraindicated, but attention should be paid to the consumption of foods with enhanced photosensitivity, such as figs, celery, rape, yellow mud snail, mushrooms and shiitake mushrooms, etc., and sunlight should be avoided after consumption. Because lupus patients take glucocorticoids for a long time, they should also have a low-sugar and low-salt diet, pay attention to calcium supplementation, and eat more vegetables and fruits rich in vitamins. Avoid taking estrogen-containing contraceptives, sulfonamides and tetracyclines, as these drugs can trigger or aggravate lupus activities.