The invention discloses a water conservancy business scene-oriented multi-dimensional multi-layer
data model construction method, which comprises the steps of constructing a five-dimensional water conservancy business scene model based on a water conservancy object, a calculation material, a calculation model, calculation time and a calculation result, and constructing a relationship among water conservancy business, the material and the result. Constructing an
object attribute table, a material attribute table, a model attribute table, a time attribute table and an achievement attribute table, constructing a water conservancy unit business attribute table, describing information of objects, materials, models, time and achievements related to a water conservancy unit business scene by the unit business attribute table, and constructing a unit
data model; determining an association relationship between the water conservancy unit business attribute table and the five established attribute tables, combining the unit data models, and constructing a water conservancy
data model of a business scene; according to the method, the unit data model is constructed for the unit business, the unit data model is flexibly arranged according to the waterpower and affiliation relationship of the object, and dynamic organization of related data of various water conservancy business scenes is realized.