To observe association between the degree of ocular axis and non-contact intraocular pressure(IOP). METHODS:One thousand and ten eyes of 508 cases aged 17 to 53(mean 26.65±6.55) years old were selected. IOP and degree of ocular axis were examined. They were divided into three groups by ocular axis: ＜24mm，24-2599mm，≥26mm.The correlation between degree of ocular axis and IOP was analyzed by rectilinear correlation and differences of IOP of the three groups were compared by analysis of variance. RESULTS:The IOP was positively correlated with the ocular axis（r=0.138,P＜0.01，Y=7.331+0.296X）. The IOP of the cases whose length of ocular axis were longer than 26mm in the largest increased. CONCLUSION:There is certain relationship among length of ocular axis and IOP, the relationship tends to become closer when length of ocular axis and IOP increase.We must pay more attention to the monitoring of IOP in high myopia.