Abstract: In order to explore the difference of Astrometrica and MaxIm DL for application and CCD image processing in Astrometry, overall introduction, loading, saving and transforming CCD images, flat calibration, data reduction and stacking of the two suites of software are detailedly compared and technically researched in this paper. Taking the example of two sets of observations of M35 Cluster photographed by the 1 m optical telescope of Yunnan Observatories of Chinese Academy of Sciences, this paper explores the output results of the 6 stacking methods including Mean, Median of Astrometrica and Mean, Median, Sigma Clip and SD Mask of MaxIm DL. Referring to Gaia DR2 Catalog, this paper reduces the 6 output results above and compares their precision of the star images. In this paper, we find anomalies in the position accuracy of the output images using Astrometrica's Median stacking. At the end of this paper, we put forward some methods of using the two suites software in combination for astrometry and survey.