摘要：

Abstract:

【Purpose/significance】 Due to the limitations of health literacy and economic capacity, coupled with the existence of the

digital divide, the needs of the elderly for health knowledge are difficult to meet. In addition, the health information of the elderly pres⁃

ents the characteristics of multiple sources and heterogeneity, so it is necessary to build an intelligent information system to integrate

and analyze data on a unified platform, so as to provide efficient and intelligent health services for the elderly.【Method/process】

Based on multi-source data fusion technology, this paper builds a smart health information service system for the elderly, including

data source layer, management layer, analysis layer and application layer. The health information service system provides theoretical

and technical support for data conversion between layers from three dimensions: data level, feature level, and decision level.【Result/

conclusion】 Based on the Yi-Lu cloud evidence-based platform, this paper focuses on providing convenient smart health services for

the elderly and meeting their needs for basic health knowledge. The proposed intelligent health information service system can realize

intelligent functions such as disease diagnosis, prescription recommendation and health monitoring.

【

Innovation/limitation】 This pa⁃

per discusses the construction of intelligent health information service system driven by multi-source data fusion. However, the health

information distribution of the elderly is scattered, which is difficult to conduct empirical analysis. In addition, it is necessary to design

the system interface and interaction mode according to the elderly's service acceptance.