AIM:To study the choice of parameters about Moria M2 microkeratome suitable for the Central Plains people,and to produce the desired corneal flap. METHODS:Totally 300 cases (594 eyes) with myopia from November 2009 to February 2012 in Xingtai Eye Hospital excimer laser treatment of myopia department were collected,which were conducted LASIK and came from the Central Plains region. 154 cases (305 eyes) were male (51.35%); 146 cases (289 eyes) were female (48.65%). The mean preoperative corneal curvature ranged from 40D to 47D. Corneal flap were made with Moria M2 in different curvature of the cornea, suction ring and stop position ,and corneal diameter, diameter of the corneal flap and pedicle width were measured to compare. The data were analyzed with SPSS 13.0 statistical software, two-sample mean comparison t test. RESULTS: Patient’s distribution: Hebei Xingtai 101 cases（33.67%）, Hebei Handan 56 cases（18.67%）, Shandong Liaocheng 31 cases（10.33%）, Shanxi Changzhi 23 cases （7.67%）, Henan Anyang 48 cases（16.00%）, Henan Puyang 16 cases（5.33%）, Henan Hebi, 25 cases（8.33%）. Corneal diameter on average was 11.35±0.25mm,corneal flap diameter on average was 8.83±0.47mm, corneal flap pedicle width on average was 4.28±0.82mm. Pedicle width and diameter of the corneal flap showed a positive correlation. In the case of the same curvature and stop position of blade, corneal flap diameter was positively correlated with width of the pedicle, and was negatively correlated with suction ring (P <0.05). In the case of the same suction ring and stop position of blade, corneal flap diameter and pedicle width with curvature were positively correlated (P<0.05). In the case of the same curvature and the suction ring, pedicle width and stop position of blade were negatively correlated (P<0.05). CONCLUSION:The cornea diameter of Central Plains people is generally smaller than the foreigners, we could reference to data table suitable for the Central Plains people when we conduct LASIK with Moria M2 microkeratome.