E-commerce has significantly expanded the online market for agricultural products and disseminated rural tourism resources. However, the operational mechanisms of rural industry digital transformation remain unclear. This paper constructs a digital evaluation model for rural industries, composed of digital economy, structural level, and development benefits, with nine specific indicators. Using the entropy weight TOPSIS method, it calculates the development level of rural industries in 30 provinces and cities in China from 2014 to 2023. The results show an overall upward trend, with the value increasing from 0.26608 in 2014 to 0.44864 in 2023, indicating the positive role of e-commerce platforms. Additionally, the paper analyzes the background and characteristics of rural e-commerce development, and explores the current situation and problems of rural industrial structure development. It proposes transformation mechanisms such as scale production, product standardization, ecological quality, and platform diversification, aiming to provide a theoretical basis for promoting the digital transformation of rural industries.