A new type nonplanar ring laser,which consists of only two spherical mirrors,was presented and analyzed.One of the mirrors is coated on the curved surface of the laser crystal,so a more compact cavity is formed.The laser beam is reflected several times on the same cavity mirror in a round trip to provide the possibility to be multi-end-pumped,which can significantly reduce the thermal effect for a given total pumping power.The modes of the nonplanar ring laser were given and the mirror separations of different modes were calculated and the beam paths were simulated.Operations of different modes were performed and the experimental results are in good agreement with the theoretical model.