The invention discloses a method for promoting fast germination and enhancing salt tolerance of rice seeds in seashore saline land. The method includes the steps that firstly, an aqueous hydrogen peroxide solution with the mass fraction being 10%-15% is used for soaking the rice seeds for 20-30 minutes; then the rice seeds are soaked by water for 8-10 hours, and then a NaCl aqueous solution of 2-5 mmol/L is used for soaking the rice seeds subjected to water immersion for 15-30 minutes; afterwards, the rice seeds are soaked for 1-2 hours by an aqueous solution including proline of 20-45 mmol/L and sulfosalicylic acid of 0.5-2 mmol/L, and then the rice seeds are soaked for 1-2 hours by an aqueous gibberellin solution of 70-200 mg/L; then the soaked rice seeds are germinated, and the germinated rice seeds are sown in a seashore saline land field. By the adoption of the method, the rice seeds are subjected to long-termed salt stress treatment, and then the mixed solution prepared from the proline and the sulfosalicylic acid and gibberellin are used for soaking the seeds, so that the germination capacity and salt tolerance of the rice seeds are improved quickly, and the bottleneck problem that the emergence rate of direct seeding rice seeds in the seashore saline land is low is solved. The method has great practical application value.