The invention relates to an intelligent detection and analysis system based on Internet of Things and cloud computing. The system comprises an intelligent physical examination platform, a data transmission device, a body composition detector, a blood cell analyzer, a urine analyzer, a biochemical analyzer, a vital sign detector and a medical server. The intelligent physical examination platform comprises a front-end work terminal, an identity card scanner, a barcode printer and a wireless network card, wherein the front-end work terminal is separately connected with the identity card scanner,a public security department data terminal, the barcode printer and the wireless network card, and the wireless network card is connected with the medical server. The data transmission device comprises a wireless router and a medical data analyzing processor which is matched with the wireless router, the wireless router is connected with the front-end work terminal through the wireless Internet, and the wireless router is separately connected with the body composition detector, the blood cell analyzer, the urine analyzer, the biochemical analyzer and the vital sign detector. The intelligent detection and analysis system has the advantages of simple structure, intelligent detection, convenient and efficient operation and comprehensive functions.