The invention discloses two genes KT473 and KT474 derived from rice and related to stress tolerance. Experiments prove that the genes provided by the invention can obviously improve the tolerance of the rice to high salt after being respectively transformed into the rice. The protein and coding genes of the protein in the invention have great theoretical and practical significances in studying the stress tolerance mechanism of the plants and improving the stress tolerance and relevant properties of the plants, will play important roles in improving the stress tolerant gene engineering of the plants (especially cereal crops), and have broad application prospects.