Depending on the location of the vascular blockage, the symptoms of ischemia in the target organ may be manifested, and prompt medical attention is required. Vascular blockage in different parts of the body will show different symptoms. For cerebrovascular blockage, there will be dizziness and headache, and in severe attacks, there will be limb immobility, coma, speech impediment and other symptoms. For the heart coronary artery blockage, can lead to cause acute myocardial ischemia can be manifested, including precordial pain, dyspnea and other manifestations, if the blockage is incomplete, long-term myocardial ischemia can lead to myocardial hibernation and myocardial fibrosis manifestations. Renal artery occlusion can manifest as pain in renal region, persistent hypertension, renal insufficiency. If the symptoms of deep vein occlusion in the limbs are mostly swelling and pain in the affected limbs, which is aggravated by activities, and can be improved by elevating the affected limbs, and the skin is mostly normal or mildly bruised. When the thrombus occurs in the calf muscle venous plexus, there may be pressure pain at the thrombus site, and occasionally there is localized pain and tenderness of the gastrocnemius muscle, fever, swelling, and so on. If the above symptoms occur or if there is a suspicion of vascular obstruction, it is recommended to go to the hospital in a timely manner in order to avoid delaying the condition.