With the launching and advancement of the “Belt and Road” initiative, international trade exchanges have grown increasingly close, and the role of Business English major in global communication has become more prominent, presenting both opportunities for disciplinary development and new challenges in talent cultivation. Against the background of New Liberal Arts, higher demands are placed on cultivating interdisciplinary competencies and digital capabilities. Graduation theses, as a pivotal component of talent development, face transformative requirements. Current Business English thesis programs in application-oriented universities confront issues including homogenized research topics, insufficient analytical skills, and academic misconduct. This paper takes on a qualitative approach, utilizes descriptive statistics to identify root causes and proposes strategies through six dimensions: authentic topic selection, deepened integration of theory-practice, standardized language expression, obedience to academic norms, improvement of thesis process management and close connection to the new trend. It further establishes innovative collaborative education models featuring “dual-track topic selection, dual-mentor guidance, and diversified evaluation” to explore thesis reform pathways aligned with New Liberal Arts principles. The proposed approaches tend to transform graduation theses into essential vehicles for developing students’ comprehensive competencies, thereby fostering well-rounded Business English professionals.