1, absolutely no smoking statistics show that the incidence of occlusive thrombophilic vasculitis in smoking patients is much higher than the prevalence of non-smoking population. Smoking can cause peripheral vascular contraction, or even spasm, increasing the degree of lumen occlusion, thus aggravating the condition. 2. Keep the feet clean and dry to prevent trauma and infection Patients with vasculitis are prone to infection due to insufficient blood supply to the legs and decreased skin resistance. Clean, dry feet are less susceptible to bacterial attack. Once the foot is traumatized, the wound will not be healed and will be infected. 3, local insulation Some people think that vasculitis is related to the cold. Cold can make blood vessel contraction or even spasm, so that the occluded blood vessel is more unsmooth, so that the condition is aggravated. However, the insulation should not be too hot, so as not to enhance the local metabolism, increase oxygen consumption, aggravate the local ischemic performance. 4, change position at any time during labor, do not keep the same posture for a long time, so as not to affect blood circulation, especially standing for a long time, blood stagnation in the lower limbs, will aggravate the local swelling and pain and other symptoms. Avoid the use of vasoconstrictive drugs Adrenaline, ephedrine and other drugs have the effect of vasoconstriction, the use of such drugs will make the peripheral vascular contraction, lumen narrowing, venous pressure increases, thus aggravating the condition.