The invention belongs to the technical field of BIM (Building Information Modeling), and discloses a railway engineering component parameterization method based on Ilogic, which comprises the following steps of: (1) decomposing a railway engineering component into a plurality of basic components according to a railway BIM union standard, and dividing the attributes of the basic components into geometric attributes and non-geometric attributes by combining an IFC attribute; (2) establishing an IFC template of the basic component according to railway IFC classification, utilizing an ilogic technology component to contain a form of an IFC attribute, and pre-writing an attribute value; (3) establishing a parameterized BIM model, setting attribute information and non-geometric information, andparameterizing railway engineering components; (4) the form information is associated with model parameters, different BIM models are obtained by setting different geometric parameter values and non-geometric attributes, and a form driving model is achieved; (5) exporting the model with the IFC attribute information as an IFC file; according to the method, on the basis of parameterization of an ilogistic form, parameters of parts are organically integrated on one form, parameterization of components is achieved to the maximum extent, and the readability of the components and the efficiency ofcomponent design are greatly improved.