[Purpose/significance] In order to provide humanities and social sciences researchers with text analysis and business model construction services, a business agent construction platform is built to provide efficient support.[Method/process] With the guiding principle of“large language models + agents”, this paper proposes an automatic it⁃erative fine-tuning mechanism of large language models, and builds a business agent construction platform in humani⁃ties and social sciences through PaaS based on business process cognitive graph technology, on-demand generation of resource parsing tools, and low-code function development technology. [Result/conclusion] The platform has the abili⁃ty of customized generation of business resources, automatic construction and visualization of business models. By uti⁃lizing the platform, business agents can perform specific analyses, thereby providing support for research work in the humanities and social sciences.