AIM:To study the effect of pedicled conjunctival transplantation combined with mitomycin C(MMC) for the treatment of pterygium complicated with conjunctivochalasis. METHODS: Totally 122 cases (156 eyes) of pterygium complicated with conjunctivochalasis were treated with pterygium excision and pedicled inferior conjunctival transplantation with intraoperative 0.2g/L MMC. RESULTS:All the 122 cases(156 eyes) had different degree of improvement on ocular symptoms 2 months after operation. Lacrimal river was normal in 136 eyes (87.18%);tear film break time (BUT) was more than 10 seconds in 117 eyes (75.00%); the conjunctival relaxed fold was free between the eyeball and inferior eyelid margin, internal and external canthus in 147 eyes (94.23%) under slit-lamp microscope; the eyelid margin location was normal in 142 eyes (91.03%).With the postoperative observation of 6 months to 4 years, 5 eyes had pterygium recurrence, the relapse rate was 3.21%;15 eyes had conjunctivochalasis recurrence, the relapse rate was 9.62%. CONCLUSION:Pterygium excision and pedicled inferior conjunctival transplantation combined with MMC for the treatment of pterygium complicated with conjunctivochalasis is easy with operation and materials, safe and reliable, which has little damage, fewer complications and lower recurrence rate, suitable for clinical promotion.