To achieve uniformity and standardization of crop germaplasm resources investigation on the “data layer”, normalize the construct of database and guarantee data quality; Investigation data, evaluation data, conservation data and census data are analyzed systematically and abstracted in this paper. And data element technology is used to construct the data standards for crop germplasm resources investigation; Evaluation Database data standards and contents for crop germplasm resources investigation are established; the complete dataset for crop germplasm resources investigation and the mapping relationship between objects and attributes are defined. The establishment of the data standards offers a uniform data interface for data integration and sharing among different databases and promotes the construct of crop germplasm resources investigation information platform in standardized.