With China's "Belt and Road" and "Going Global" initiatives implemented, an increasing number of Chinese enterprises are investing and establishing operations in Thailand. Among these companies in Thailand, Thai employees constitute the primary human resources. Many Chinese enterprises still rely on management practices based on Chinese experience; however, this approach does not entirely align with the actual situation of Thai employees. This misalignment between management practices and employee realities has a direct impact on Thai employees' work enthusiasm, thereby influencing market competitiveness and sustainable development of Chinese enterprises in Thailand. Taking Z Rubber Thailand Company as an example, this paper aims to explore methods to enhance the work enthusiasm of Thai employees by drawing on previous research on employee work enthusiasm. This study conducted a questionnaire survey of Thai employees at Z Rubber Thailand Company, resulting in 312 valid responses. The analysis revealed that six factors primarily influence the job enthusiasm of Thai employees in Sino-Thai companies: job characteristics, promotion opportunities, work relationships, working conditions and environment, salary policies, and welfare policies.