The invention relates to the disciplines of marine biology, paleoceanography and sedimentary geology, can be applied to the field of the identification research of the species of foraminifera, the research of marine environment indication, the research of paleoenvironmental reconstruction and global change, and the like, and in particular provides a rapid preparation method for a lumen structure grinding disc of deep-sea foraminifera. The foraminifera obtained from the separation of deep-sea sediments are subjected to gum dipping lumen, hanging drop embedding, positioning fixation and water-grinding disc processing, that is, a complete grinding disc of the lumen structure of the deep-sea foraminifera is quickly obtained. The method provided by the invention, through the layer information obtained by the grinding disc, can more accurately identify the species of foraminifera, avoids scientific confusion such as identification errors caused by external morphological variations such as the shape, texture and number of compartments of the worm body, and provides accurate scientific basis and quick problem solving solutions for the disciplines of accurate identification of the species of deep-sea foraminifera, the research thereof of marine environment indication, the research of paleoenvironmental reconstruction, the research of global change, and the like.