The root of the tooth long hard bag a little pain need to clarify the cause of pain, common alveolar abscess or periodontal abscess, corresponding to anti-inflammatory drugs or root canal, surgical treatment. 1. Periodontal abscess: when the gums are stimulated by local inflammation or tartar long-term accumulation caused by periodontitis, may appear in the periodontal vicinity of the alveolar abscess, early before the formation of abscesses before touching the texture of the hard, after the formation of abscesses touching the fluctuating sensation. Generally remove local irritants, periodontal treatment to remove tartar, if necessary, flap surgery, while taking antibiotics (such as metronidazole, amoxicillin). 2. alveolar abscess: the root of the tooth has a hard lump and pain may be caused by apical periodontitis alveolar abscess, apical inflammation penetrates the periosteum to reach the submucosa, chewing food will be painful, the need for root canal treatment to remove the infected material, if necessary, the abscess incision. Any pain or discomfort in the mouth is recommended to go to the hospital for examination and timely treatment, and medication should be prescribed by the doctor.