The invention relates to a Revit platform based continuous-girder-bridge parametric modeling method. The method includes: 1), leading in numerical values of coordinate points of box-girder sections ofa continuous girder bridge to generate a box-girder contour model; 2), adding datum lines, size markers and parameter constraints of the box-girder sections and establishing parametric three-dimensional box-girder component models; 3), according to instance data of a box girder, generating box-girder instance models of the entire bridge according to the parametric three-dimensional box-girder component models established in the step 2), and modifying names of the instance models of box-girder components according to actual needs; 4), establishing rebar models of the box-girder components; 5),establishing component models of bridge piers, bearing platforms and pile foundations. Automatic generation of statistic of work amount and drawings is achieved, and a good data platform foundation is provided for operation and maintenance of later bridge BIM (building information modeling); problems that two-dimensional drawings are repeated in data input, non-universal in data, dispersing in spatial relation, non-parametric, informative linkage forbidden in parameter design and the like are solved.