Objective To explore the effect of modified skin-stretching technique in the treatment of skin defects in lower limbs.Methods From January 2014 to June 2017,15 patients utilized one or two skin-stretching device for the closure of the skin defect ranged from 5 cm×4 cm to 22 cm×11 cm in thigh(n=5)and lower legs(n=10).Results All patients achieved primary or delayed primary closure.The patients were followed up for 6 to 12 months,the defect healed well with concealed scar and good function.Conclusion The modified skin-stretching technique provides a safe and effective method for the treatment of moderate to large skin defects in the lower extremities by utilizing the biomechanical properties and mechanical creep properties of skin,and provides a new option for clinicians in addition to traditional skin graft and free flap transplantation.