The embodiment of the invention discloses a construction method and a construction device for a high speed train product meta-model. The construction method comprises the following steps: acquiring product-related data of a known high speed train product, and establishing a product structure tree according to the acquired product-related data; establishing a product meta-model corresponding to the high speed train according to the product structure tree, and acquiring product-related data required by a new high speed train design; generating product design data, required in correspondence to the train type of the new high speed train design, of the known high speed train according to the product meta-model and the product structure tree. Obviously, when the product-related data acquired by the new high speed train design are acquired, the product design data, required in correspondence to the train type of the new high speed train design, of the known high speed train is generated by means of the product meta-model and the product structure tree. Therefore, the repeated research and development works of the known high speed train research and development products can be effectively reduced, existing research and development resources can be sufficiently utilized and the high speed train research and development efficiency is improved.