The present invention relates to an oilfield management system. The oilfield management system comprises: one or more devices for measuring working conditions of oil wells, the one or more devices for measuring working conditions of oil wells are installed on one or more oil wells respectively for measuring working conditions of the one or more oil wells, the working conditions of oil wells at least comprise indicator diagrams of oil wells; one or more remote transmission units, each of the remote transmission units receives the working conditions measured by one or more of the devices for measuring working conditions of oil wells; and server, which determines running status of the one or more oil wells according to the working conditions of oil wells from the one or more remote transmission units; maintenance staff or administrators manage the one or more oil wells according to the running status of the one or more oil wells. The present invention can collect indicator diagrams of an oil well on a regular basis, detect ON/OFF status of an oil well in real time, and realize the calculation of liquid production capacity via indicator diagrams and efficient and elaborate management of working conditions of oil wells.