The invention provides a buried abandoned well artificial magnetization device and a detection method. The magnetization device comprises a GPS module, a time switch power source and a wire, wherein the wire is a magnetizing coil composed of one or more turns of overlapped wires; the GPS module is used for high-precision time service, the time switch power source is used for sending impulse voltages at a fixed frequency, and the wire is used for generating a magnetic field. According to the buried abandoned well artificial magnetization device and the detection method, abnormal signals on theground of a buried abandoned well are enhanced through an artificial magnetization method, the corresponding artificial magnetization coil is manufactured, the detection rate and locating accuracy ofthe abandoned well are further improved, and the safety risk is reduced.