Fuente: Wipo "BigData" The invention discloses an Internet of Things information combined big data acquisition and treatment system, which comprises an image acquisition module, a crack identification module and a crack area risk assessment module, and is characterized in that the image acquisition module is used for acquiring an image of the inner wall of a subway tunnel; the crack identification module is used for carrying out crack identification on an acquired subway tunnel inner wall image, the crack area risk assessment module is used for assessing the severity of a crack, and the output end of the image acquisition module is electrically connected with the input end of the crack identification module. The output end of the crack recognition module is electrically connected with the crack area risk assessment module, the image acquisition module comprises an area-array camera and flash lamp integrated module, a power supply system and an industrial personal computer module, and the system has the advantages of being wide in acquisition range and high in recognition precision.