When knee pain occurs after walking too much, it is mainly due to inflammatory lesions in the knee joint itself, such as patellar chondromalacia, osteoarthritis, or degeneration of the surrounding soft tissues, strain, strains, etc. In this case: 1. you must keep the knee joint relaxed and rested, try to choose bed rest, and put the knee joint in an appropriate position, above the level of the heart, to promote metabolism through gravity. 2. You must pay attention to the warmth of the knee joint and not to get cold, because the inflammatory metabolites will accumulate and increase due to cold, which will aggravate the pain. 3. You can take oral anti-inflammatory and analgesic drugs, such as Nimesulide, diclofenac sodium enteric capsules, and clonoxicam, which can effectively reduce inflammatory stimulation and pain. 4, can be applied externally to activate blood, swelling, pain relief cream, such as Wan Tong tendon and bone paste, blood pain relief cream, can also paste magnetic therapy paste, can effectively increase the local temperature, improve blood circulation, promote venous reflux, pain symptoms can be effectively relieved. If the relief is not obvious, you need to go to the hospital for knee MRI examination.