Gums grow a lump without pain, common causes are apical periodontitis, periodontal abscess, gingival hyperplasia polyps, gingival tumor, etc., need to be given according to the cause of the general treatment, drug treatment and surgical treatment. 1. Apical periodontitis: apical periodontitis may cause protrusions above the gums, resulting in the phenomenon of long gums without pain, you need to go to the hospital in time to take root canal treatment. 2. Periodontal abscess: the formation of abscesses in the gum papillae may also lead to the phenomenon of the gums growing a lump without pain. Generally need to take incision and drainage, with metronidazole, cephalosporin antibiotic anti-infection treatment, and later periodontal treatment. 3. Gingival hyperplasia polyps: a variety of factors stimulate the formation of gingival hyperplasia polyps, can also lead to the gums grow a lump of flesh without pain, usually take surgical excision. 4. Gingival tumor: benign tumors or malignant tumors and other diseases of the gums, can also lead to the gums grow a lump without pain. It needs to be removed by surgery in time. Gums grow a lump without pain, there may be other reasons, you need to go to the hospital in time to check, follow the doctor’s instructions for treatment.