Knee ligament injury can use drugs to activate blood circulation and remove blood stasis, mainly external and oral drugs, can activate blood circulation and remove blood stasis, which is conducive to the recovery of the disease. 1. Topical medicines: common medicines include compound methyl salicylate cream, pain relief cream and joint analgesic cream, which can promote blood circulation in the knee joint and facilitate the recovery of the ligament. 2. Oral medications: Common medications include diclofenac potassium capsules, amphetamine tablets and ibuprofen capsules, which can relieve pain, control inflammation, reduce swelling and help ligament recovery. All of the above drugs should be used under the guidance of a doctor, not blindly use their own medication to avoid aggravation of the condition, ligament injury, pay attention to rest, avoid strenuous activities, light diet, prohibit spicy and irritating food, can be local joints for hot compresses, can relieve pain and reduce discomfort. If the damage is serious, you also need to consider surgical treatment, the specific need to consult a doctor in a timely manner, by the doctor for evaluation.