Patient: The condition is described as having varicose veins about forty years ago and there has been no bad feeling. However, on October 5 this year, there was a sudden pain with redness and swelling and a painful sensation of giant cracking on pressure. The hospital surgeon diagnosed that the primary varicose vein was infected with thrombosis. As a result, the doctor prescribed three days of cephalosporin in the outpatient clinic. No effect was recognized, and the redness and swelling became bigger and bigger. On October 10, I had to be hospitalized, and the doctor treated me with penicillin, levoxyl and vitamin C. The effect was significantly better. On October 23, the doctor sent us to Nanchang to have a venous ultrasound, which showed that there was no significant change in the deep vein, but there was a significant varicose vein under the right joint, and there was a partial thrombosis, but there was fresh blood flowing through it. 24, our county hospital saw the result and asked us to operate, saying that the inflammation of the thrombosis would not go down and we had to do the operation, otherwise it would form a cerebral embolism and a heart embolism and we would die immediately. But the old man is not willing to do the surgery. I want to ask if it is really that dangerous and if there is no surgery is there any other way? Doctor: varicose veins of lower limbs can be secondary to thrombosis, which can be called “thrombotic superficial phlebitis”: 1, the thrombus of thrombotic superficial phlebitis can be dislodged to occur pulmonary embolism, there is a certain risk, but the chance is low; 2, thrombotic superficial phlebitis is a sterile inflammation, antibiotics are not recommended; 3, you can use Xylitol or magnesium sulfate solution External application, can be supplemented with some blood-vitalizing and vasodilating drugs (oral or infusion); 4.Surgery can be considered when the condition is serious, and deal with thrombosis and varicose veins at the same time.