Sebaceous cysts are a type of benign hyperplasia, relating to either the vigorous secretion by one's sebaceous glands or the presence of a localized abscess. The most conventional treatment is to visit the dermatology or general surgery department of a formal hospital to perform a minor surgery, where the cyst sac and tofu-dregs-like material are completely removed for a cure. The underlying causes of this condition are numerous, generally associated with personal diet and lifestyle habits. After recovery, it is crucial to regulate one's diet and lifestyle, persistently avoid spicy and irritating food, prevent staying up late and experiencing anxiety, enhance physical exercise, sweat more, bathe more frequently, which all help in preventing a recurrence. Regularly exposing one's clothing, bed sheets, and quilt covers to sunlight, and avoiding public baths and swimming, also contribute to prevention.