Popliteal vein thrombosis is a kind of deep vein thrombosis in the lower limbs, which may show symptoms such as localized elevated skin temperature, swelling of the lower limbs and muscle weakness of the lower limbs. 1. Increased local skin temperature: In popliteal vein thrombosis, especially the surface vein thrombosis will lead to the blood can not return to the normal flow, the local temperature will be increased, and at the same time show the symptom of congestion. 2. Swelling of the lower limbs: popliteal vein thrombosis may cause swelling and pain in the lower limbs. When the condition is serious, it may also cause sensory and motor dysfunction at the end of the limb. 3. Weakness of limbs: popliteal vein thrombosis may also lead to the symptoms of muscle weakness of the lower limbs, which is caused by the influence of lower limb venous thrombosis on the return of venous blood. If popliteal vein thrombosis occurs, you should go to the hospital in time to see a doctor and give appropriate treatment under the guidance of the doctor after clarifying the cause of the disease.