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There are some problems such as single detection method, complex operation process, and large error in detection results when the most hospitals perform air quality detection?at present. According to?the principles of modularity,?standardization and usability, this paper designs a Real-time Hospital Air Quality Detection System?based on ARM and Lora technology. This system presents the basic function unit and the concrete operation flow of the embedded hospital real-time air quality detection system?and completed the hospital air quality real-time testing;?the upper computer takes Linux operating system as the data processing channel, and adopts Lora wireless technology as the communication support to design the master control module, acquisition module and communication module. The experimental results verified the effectiveness of the hospital air quality real-time detection system, obtained good target detection results, reduced detection errors, improved the efficiency of air quality detection, and provided an efficient and accurate tool for improving hospital air quality.