Abstract Objective：To investigate the clinical effect of wrist arthroscopic bone tunnel fixation in the treatment of triangular fibrocartilage complex（TFCC）Palmer IB and ID injuries. Methods: From June 2014 to July 2019, 28 cases of TFCC IB, ID injury treated by arthroscopy in affiliated Hospital of Jining Medical College were reviewed.According to the surgical method, they were randomly divided into two groups, A and B. Group A was repaired with debridement and joint capsule fixation, and group B was repaired with bone tunnel fixation technology.The preoperative and postoperative pain, wrist movement, external fixation time, and modified Mayo score of the wrist were compared.. Results: Patients in both groups successfully completed the operation under arthroscopy, and none operation was turned to open surgeryy due to difficulty. There was no significant difference in incision length between the two groups (p> 0.05). There was no significant difference in incision length between the two groups (p> 0.05). Although the operation time and intraoperative blood loss of the osteosynthesis tunnel group were significantly larger than the osteosynthesis group (p <0.05), the osteosynthesis group was significantly better than the osteosynthesis group in postoperative fixation time (p <0.05). After a follow-up of 12.6 months, there were significant differences in shutdown activity, VAS pain score, and modified Mayo score between the two groups. The bone tunnel fixation group was significantly larger than the articular capsule fixation group (p <0.05). In terms of imaging evaluation, the osteoradial space and the magnetic resonance edema under the stress position were significantly smaller in the bone tunnel fixation group than in the articular capsule fixation group (p <0.05). Conclusions: Diagnosis and treatment of TFCC injury by wrist arthroscopy is safe and effective. The effect of repairing TFCC by bone tunnel fixation technique is better than that of traditional simple debridement and capsule repair. It provides a new alternative method for clinical repair of IB and ID type TFCC injury.