Minimally invasive ligament repair surgery generally refers to ligament repair of the knee joint, and the indications mainly include repair and reconstruction of the anterior and posterior cruciate ligaments of the knee joint. Repair of anterior and posterior cruciate ligaments of the knee: after injury of anterior and posterior cruciate ligaments, minimally invasive treatment can be performed through knee arthroscopy. Patients with less severe injuries can choose to have the ligaments sutured and hematoma cleared under knee arthroscopy, while other ligaments (medial and lateral collateral ligaments) as well as meniscus and other structures can be explored. Secondly, knee arthroscopy is also an option for patients with more severe injuries that require ligament reconstruction. The procedure involves making two 1-cm incisions in the anterior medial and anterior lateral recesses of the knee, inserting the arthroscope into the joint cavity, drilling 7-9 mm bone tunnels in each of the tibia and femur, and fixing autogenous or allogeneic tendons into the tunnels to rebuild the damaged cruciate ligaments. The most appropriate surgical plan for knee ligament injuries needs to be given after a comprehensive assessment by a specialized surgeon.