In order to enhance the integrity of corpus, and optimize and analyze its data, it can enhance its integrity effect. Therefore, smart approaches are incorporated. The purpose of this study is to explore the construction and language evaluation of a computer-based business French corpus. The corpus consists of a group of texts for business courses, such as job advertisements, letters, etc. The corpus is constructed by qualitative analysis of texts from different sources (recruitment advertisements, letters, etc.). The data was collected through an interview with a native speaker who has been teaching French in college for many years. In addition to this interview, we also tested the participants’ knowledge. With the help of computer, the integrity level of corpus can be improved, the results and contents of corpus can be optimized and judged, and a reasonable logical structure can be formed. Make it clearer and match the actual calling requirements. Among them, the response time has been greatly reduced, from the original two minutes to 30 s, and the result has also been improved to 80% in the way of corpus rationality. Computer technology can provide support for corpus analysis and promotion and optimize the original analysis effect.