Space target detection and cataloging are an important topic for spacecraft safety, the large number of space targets makes the workload of orbit calculation very heavy. Although the analysis method has a fast calculation speed, it cannot adapt to the processing of high-precision observational data. Therefore, the numerical method will become an important method for the calculation of the target orbit. The spatial target cataloging work generally involves the generation and calculation of dense ephemeris, and the numerical calculation of large eccentricity orbitsfor this problem has not yet formed an effective technical means with both calculation accuracy and calculation efficiency, which is difficult tomeet the processing requirements of cataloging. Under this background, a fast processing method suitable for the precise calculation of dense orbital ephemeris with large eccentricity is proposed, and the model parameters are optimized through numerical experiments. Finally, the superiority ofthe calculation scheme is confirmed by calculation examples.