We aimed to investigate the feasibility and efficacy of early correction of severe blepharoptosis after double-eyelid blepharoplasty using conjoint fascial sheath (CFS) suspension. From July 2013 to July 2016, 23 patients (25 eyes) with severe blepharoptosis were treated with CFS suspension and followed up for 12-36 months. The levator function, margin reflex distance, patients' satisfaction with the appearance of the double eyelids, and complications were retrospectively analysed. Full correction was achieved in 24 eyes and overcorrection in one eye. No undercorrection was noticed. Postoperatively the mean levator function was significantly increased (from 1.5 to 10.2mm) and the margin reflex distance was significantly increased from -1.0 to 4.8mm. All patients were satisfied with the appearance of the double eyelids. No recurrence of blepharoptosis occurred postoperatively. One patient had postoperative chemosis and was well-managed with conservative treatments. CFS suspension is a safe and effective way to treat severe blepharoptosis after double-eyelid blepharoplasty. The treatment is effective in the long term.