Abstract: Study on land reclamation and utilization of large temporary facilities in high-speed railway construction was carried out by taking Jiangyin prefabrication yard as the research object. On the basis of analyzing the process of land reclamation and utilization of large temporary facilities in high-speed railway construction. The reclamation engineering partition, reclamation planning and scheme was made and optimized based on detailed analysis of the land characteristics of the prefabrication yard. The results showed that Jiangyin prefabrication yard could be divided into seven sub-regions according to the engineering layout, hardening characteristics and reclamation difficulty. Combined with the land use planning requirements as well as the reclamation suitability evaluation and based on input-output analysis, the optimal reclamation directions for the beam making area and beam saving zone of stay reclamation area are agriculture facilities land while the optimal reclamation directions for other sub-zone are forestlands, and the evaluation result is with the actual relatively anastomosis, which can be widely used in other large temporary facilities’ reclamation and utilization.