Objective  To observe clear corneal incision aberrations and contrast sensitivity corneal wavefront after 1.8 mm micro-incision phacoemulsification with different locations. Methods  86 patients （86 eyes） with age-related cataract in our Hospital Kenmin of Wuhan University were selected， use in randomization method divided into two groups according to different locations： temporal 10∶00 bit incision or temporal 2∶00 bit incision group： 43 cases （43 eyes）； 12∶00 bit incision group： 43 cases （43 eyes）. Corneal wavefront aberrations and contrast sensitivity were recorded preoperative and postoperative at 1 month and 3 months. Independent  sample t tests， rank sum test， chi-square test were used. Results  The differences of visual acuity between the 2 groups was statistically significant after 1 month and 3 months postoperation （χ2=8.053， 10.532， P<0.05）. 1 month and 3 months postoperation Z42 in group A and group B were 0.03±0.04 μm and 0.09±0.06 μm， 0.03±0.03 μm and 0.08±0.04 μm， respectively. The difference was statistically significant （t=4.54， 4.93， P<0.05）. The difference was statistically significant in total higher order aberrations （t=2.16， 2.76， P<0.05）. There was no statistically significant differences in contrast sensitivity between the 2 groups 1 month and 3 months postoperation. Bright and bright glare under each spatial frequency conditions or dark and dark glare under different frequency conditions with statistically significant differences between the 2 groups （P<0.05）. Conclusion  1.8 mm clear corneal incision phacoemulsification incision with temporal corneal incision has less wavefront aberrations and  better visual quality than the 12∶00 incision， which is an ideal surgical incision site.