Problem of low soil fertility is one reason of low yield in rice terraces because of the soil was less clay mineral content, less total soil density, soil acidity and low soil nutrients are not sufficient for the growth of rice. The crop rotation is one approach to solving this problem. The experiment aims to study the effect of crop rotation on soil fertility and yield in rice terraces. This experiment was conducted the main crop is rice cv. Sew Mae Jan and the experimental design was randomize complete block design with 4replications and4 treatments: 1) rice-lablab bean rotation 2) rice-wheat rotation 3) rice- cabbage rotation 4) rice (check). The results revealed that the crop rotation 4 treatments had not difference of soil fertility between before and after planting the crop rotation. The rice-lablab bean rotation showed increase of rice yield 13 percentage. The height and number of panicle was increased compare with only rice system, but not statistically significant difference. The rice-wheat and rice-cabbage rotations are increased less of rice yield. However, crop rotation is necessary for the cultivation of rice terraces help retain soil fertility and should be handled after harvest by plowing or using agricultural residues to be useful to increase the yield of rice terraces in the next season.