AIM:To discuss the related issues of tunnel incision production techniques in small incision non-phacoemulsification.METHODS:Complications and related issues impacting operation due to improper construction of incision in small incision cataract surgery of 368 eyes were analysed.The tunnel incision production related skills were summed up.RESULTS:Due to incision misoperation,complications of corneal edema,iris damage,hyphema,suspensory ligament rupture,posterior capsule rupture and vitreous prolapse and operational difficulties of incision leakage,iris prolapse,anterior chamber fluctuations,capsulorhexis,nuclear delivery and difficulty of intraocular lens implantation were in total 56 eyes intraoperatively and postoperatively,accounting for 15.2%.There fore,incision was irregular in 15 eyes,accounting for 26.8%;incision was too small in11eyes,accounting for 19.6%;tunnel was too shallow in 8 eyes,accounting for 14.3%;tunnel was too deep in 6 eyes,accounting for 10.7%;tunnel was too short in 11eys,accounting for 19.6%;tunnel was too long in 5 eyes,accounting for 8.9%.Correct tunnel incision was key to successful operation.CONCLUSION:Improper production of surgical incision in small incision non-phacoemulsification will affect operation and cause complications.Therefore,the tunnel incision should be constructed in strict accordance with the incision construction principle,and production skills should be mastered.