Objective This study assessed the improvement in Quality of Life (QoL) of Chronic Venous Disease (CVD) patients in Sri Lanka following treatment. Methods This was a prospective observational study of 58 newly or previously diagnosed CVD patients. QoL was assessed by the 14-item ChronIc Venous dIsease quality of life Questionnaire (CIVIQ-14) at 4 and 8 weeks after treatment. Results At 8 weeks, the improvement in Global score from baseline was greatest in the surgical group with adjusted least squares mean of 23.5 (p < 0.001) followed by the non-surgical group at 13.3 (p < 0.001). There was no significant improvement in the no-treatment group at 0.333 (p = 0.950). Similar results were obtained for Pain and Physical domain scores at 8 weeks. Likewise, at 4 weeks, Global score and Pain and Physical domain scores showed significant improvement in the surgical and non-surgical groups (all p < 0.001) only. Conclusion Both surgical and non-surgical treatments improved QoL of CVD patients.