This paper aims toconvert files of the Boundary Representation (B-rep)model in industrial modeling engineering to files of the Uniform continuous mesh model efficiently through retopology, which provides a bridge for parametric design and finite element analysis, further construct a closed loop of parametric design workflow. Through algorithm plug-in based on Rhino platform, the basic mesh preset many constraints such as the spring force of the rod, the anchoring force of the boundary and the attractive force of the target is wrapped onto known B-rep shapes. And through dynamic multiple iteration algorithms, the retopology mesh is infinitely approached to the original surface. Finally, the basic mesh is reconstructed into a uniformly continuous four-sided mesh with a controllable number. After this process, the designer only needs to do a few clicks operation, and the discontinuous B-rep shaper can be re-topological within a few minutes. The new mesh obtained is uniform and continuous, and the number of faces is controllable, saving a lot of manpower repair time.By providing retopology method based on dynamic algorithm, parametric designer can Connect factories more smoothly, and finite element analysis will be more efficient to aided support design. It is one of the important technical foundations of industrial design digital closed loop.