IKDC classification before surgery, grade C accounted for 3.2%, grade D accounted for 96.8%; After surgery, grade A accounted for 83.9%, grade B accounted for 16.1%, there were no patients in grade C, D Conclusion: All-Inside Anterior Cruciate Ligament Reconstruction Using an Anterior Half of the Peroneus Longus Tendon Autograft is a good technique to restore the ACL for patients.