Dental implant pain after five or six years may be due to implant loosening, peri-implant inflammation, crown inappropriateness, etc. It is recommended that patients should be treated conservatively or surgically according to the cause of the disease. 1. Loose implant: loose implant may also cause tooth pain, it is recommended that the patient can go to the hospital for a comprehensive examination, and the implant will be taken out, to be the alveolar bone regrowth to the standard level and then re-implantation, if there is a structure of loose and other minor symptoms, should also go to the hospital in a timely manner to tighten the treatment. 2. Peri-implantitis: If the patient suffers from peri-implantitis and the symptoms are mild, the patient will be treated with drugs such as tinidazole and amoxicillin under the guidance of the doctor, and if the situation is serious, the patient should go to the hospital for flap debridement and osteotomy. 3. Inappropriate crown: If the crown is inappropriate, the patient can go to the hospital for corresponding adjustment, grinding, if the situation is more serious, should also be remade crown. It is recommended that patients should go to regular hospitals for treatment, and pay attention to oral hygiene and sanitation during the recovery process, develop the habit of brushing teeth and rinsing the mouth, and use medication as prescribed by the doctor.