Most knee ligament strains are caused by strenuous exercise and usually require recuperation, avoiding activity in the early stages and with appropriate adjunctive therapy. In the acute phase, knee ligament strains are often accompanied by local swelling and limited joint movement, and may become chronic if not treated promptly or in an appropriate manner. During this stage, patients need to use protective braces to immobilize the injury site, and the duration is usually 4-6 weeks, bed rest is the main focus, and strenuous exercise is not recommended in the short term, otherwise it will aggravate the ligament injury and is not conducive to recovery. However, under the protection of the brace, patients can carry out appropriate functional exercises under the guidance of the doctor to prevent joint adhesion and stiffness. After knee ligament strain, the patient can cooperate with cold compress treatment within 24 hours and avoid hot compress. After 48 hours, the patient can apply blood-activating drugs under the guidance of the doctor and pay attention to elevating the affected limb to facilitate local swelling reduction.