Lower limb arterial occlusion necrosis mostly from the toe, usually no effect on normal people may cause catastrophic consequences, common care methods are as follows: 1, pay attention to warmth rather than heat, do not use hot water bags, hot towels, to avoid burns, to avoid causing necrosis and ulcers of the lower limbs; 2, lower limb arterial occlusion, especially diabetic foot patients, to avoid foot trauma; 3, nail clipping should be careful to avoid causing ingrown nails, nail gingivitis, causing necrosis, amputation and other dangers; 4, walking gently to avoid trauma, causing foot necrosis; 5, the sole of the shoe should be thick, soft, not too tight, wear new shoes to pay attention to prevent injury, and carefully check before wearing shoes every day to avoid small stone choking.