The end-effect of which is caused by the limited axial size of radial HTS magnetic bearing will affect axial levitation behavior of radial HTS magnetic bearing. A 2-D finite element modeling method based on H-formulation is proposed to analyze the end-effect of radial HTS magnetic bearing. Firstly, the proposed finite element modeling method is verified by experimental tests. Then, the finite element models of radial HTS magnetic bearings with different sizes of stator and rotor are established respectively. Finally, it is obtained that the relationship between axial levitation force and displacement of superconducting stator of different size and permanent magnet rotor with different number of poles. The results show that due to the end effect, the axial levitation behavior deteriorates with the increase of the number of superconducting stator bulks. Moreover, with the increase of the number of permanent magnet rotor poles, the maximum axial levitation force shows a trend from rise to decline and it eventually approaches the maximum axial levitation force of permanent magnet rotor for infinite length.