The 'Urban Traffic Health Analysis and Intelligent Diagnosis System' is a system designed for various modes of transportation in a city, based on the comprehensive analysis of operational conditions using multi-source heterogeneous massive data. It employs big data technology and artificial intelligence to perform intelligent analysis and diagnosis, resulting in analysis outcomes such as spatial and temporal distribution of traffic states, travel time consumption, and traffic quality. The system further diagnoses the health status of urban traffic, provides an analysis of the causes of traffic ailments, and indicates directions for improvement in traffic health. The main functions of the system include: urban road health diagnosis, urban bus health diagnosis, and urban intersection health diagnosis.