Protruding gums may be caused by alveolar abscess, gum polyp, gingival tumor and other diseases. 1. Alveolar abscess: This disease is mostly caused by bacterial infection, but also related to dental contusion, chemical stimulation, decreased immunity and other factors, the typical symptom is the recurrence of pus in the gums, accompanied by pain, which can be manifested as protruding gums. 2. Gingival polyps: the disease is a manifestation of abnormal gum proliferation, with calculus, plaque, food debris and other factors, generally asymptomatic in the early stage, when the polyps continue to grow, in addition to the presence of gums protruding, there will be pain, bleeding and other symptoms. 3. Gingival tumor: the occurrence of this disease and endocrine changes, as well as poor restorations, food impaction, traumatic injury, tartar and other reasons. It mostly manifests as oval or round lumps at the gums, thus causing the gums to protrude. When protruding gums occur, you need to go to the hospital in time to improve the relevant examination to clarify the specific cause.