Abstract:Objective：To compare the clinical curative effect and the pros and cons of microwave intracavitary minimally invasive treatment and traditional operation for varicose veins in lower extremities. Methods：Treatment group:The varicosities of greater saphenous vein were treated by microwave coagulation intracavitary treatment together with injection coagulation treatment of its tributaries. Control group:The varicosities of greater saphenous vein were treated by traditional operation. Results：Treatment group was better than control group in improvement of symptoms, cosmetic effect of diseased limb, operation time, amount of blood loss, length of hospital stay, and complications of operation. Conclusions：Microwave coagulation intracavitary treatment of varicose veins in lower extremities has more advantages, such as minimally invasive, little pain, quick recovery, good cosmetic effect, better result, fewer complications, and simplicity of operation.