Sample of 60 evaluable patients were included in a prospective study with Superficial Veins Thrombosis(SVT)on ground of varicose vein lower extremities. the study achieved at AL-Assad hospital (Latakia) in the period between January 2005 to December 2011. Criteria of inclusion were incompetence (by Duplex investigation ), a tender indurated cord a long superficial vein, and indurated and heat in the affected area. Exclusion criteria were obesity, cardiovascular or neoplastic diseases, non-ambulatory status, SVT without varicose vein. 60 patients ( 41 females, 19 males) included in the study, 61.6% were between(31–50) years, left lower limb was affected in 48,3 %, Right 40%, and in 11,7 the both, The GSV was affected alone in all cases. Primary surgical choice was decided almost in all patients, secondary was in 4patients after 1-4 weeks of medical treatment. The extension level in the GSV determined by color duplex ultrasound was similar to surgical findings, and above clinical extension level in (5-14) cm. All surgical intervention was achieved under spinal anesthesia, with no major technical difficulties. Short term results were good, no(DVT, PE, acute cardiac ischemia, death ), complications related to surgery(hematoma, seroma5%, wound infection3.3%, wound necrosis1.7%, lymphatic discharge3.3%) show no difference to un complicated varicose surgery. Conclusion: Primary surgical approach can be used with thrombosis of GSV above knee in varicose patients safely and effectively , color duplex ultrasound scans is recommended to determine extension of SVT.