White pus on the gums may be periodontal abscess, apical abscess, wisdom teeth periodontitis and other reasons. 1. Periodontal abscess: usually do not pay attention to oral hygiene, dental calculus is more, meet the body resistance decline, it is easy to cause inflammation of the gums, gums rapid swelling, resulting in periodontal abscess, there will be white pus on the gums. 2. apical abscess: suffer from pulpitis without timely treatment, the inflammation will be absorbed by the alveolar bone, and then in the gums to form a pus, called apical abscess. If the abscess is not treated, the inflammation will go outward along the alveolar bone, which may cause gingival fistula/jaw osteomyelitis. 3. Wisdom teeth periodontitis: long wisdom teeth relationship mouth no extra position, wisdom teeth and gums their own space is difficult to clean, food accumulation in the gap to speed up the bacterial reproduction, the formation of a variety of anaerobic bacteria, the gums will be white pus. Specific reasons for white pus on the gums, it is recommended that you can go to the dental hospital in time to do a detailed examination.