Computational linguistics is a subject closely related to contemporary science and technology. The research results of computational linguistics have been applied in machine translation, information retrieval, natural language man-machine interface, and other important fields. At the same time, with the development of machine translation, problems have also emerged. This paper find out some deficiencies of machine translation and post-editing strategies from the comparison between Youdao translation and manual translation of Report on the Work of the Government 2021. Machine translation is ultimately a linguistic problem. In post-editing, translators should pay attention to context, logical relationships, four-word phrases, and so on.