The utility model discloses a substation operation and maintenance integration on-site work information collection system which comprises an intelligent terminal module, a data communication module and a computer processing module. The intelligent terminal module comprises an on-site data sensing module, an on-site data input module and an on-site data output module. The on-site data sensing module senses and acquires related on-site data information, and transmits the information to the intelligent terminal module through the on-site data input module and the on-site data output module. The data communication module comprises a 3G wireless communication module and a Web Service data exchange module. The 3G wireless communication module is located between the intelligent terminal module and the computer processing module. The Web Service data exchange module is located between an inspection terminal module and the computer processing module. The inspection terminal module takes corresponding data information of the computer processing module through the data exchange module. The computer processing module stores data uploaded by the inspection terminal module into a database module through the data exchange module.