An objective analysis software for meteorological elements developed under VC environment is described. It makes isoline analysis by means of triangle grids and cubic B-spline curve smoothing,and counter-distance weighting method for interpolation. Some functions of the CxImage graph package were sealed so as to realize the quick generation and storage of graphics in the memory. Through the interface design of data menu, product output list, and information-control list, automatic objective analysis was realized successfully. The software can be used as an independent platform or as a module, and can be operated automatically or manually. The real-time graphic rainfall display across Shandong Province without any manual intervention was realized under Windows. The software has been used in the Shandong provincial-level meteorological service and research.