AIM:To investigate corneal radius(CR) using rotating Scheimpflug camera (Pentacam) in myopia eyes, and to determine its relationship with axial length(AL) and spherical equivalent refraction(SER). METHODS: Totally 136 myopic case (267 eyes) were selected randomly. Anterior and posterior CR were determined using Pentacam, and AL was measured by IOL master. Data were stratified by refractive state. The relationships among CR, AL and SER were correlated by Spearman correlation. RESULTS: Normal distributions of anterior and posterior CR were revealed by Kolmogorov-Smirnov tests. The CR was directly positively correlated with AL, and not correlated with SER. The AL/CR was negatively correlated with SER. In different refractive state groups, there were significant differences in the AL and AL/CR. CONCLUSION:The CR is correlated with AL. It is the second important biometric parameter related to myopia.