Magnetic flux leakage detection probe for oil and gas pipeline

The invention relates to the technical field of pipeline detection, and discloses an oil and gas pipeline magnetic flux leakage detection probe which comprises a shell, a grip, a sliding frame, a fixing frame, a telescopic machine, a fixing seat and the like. A handle is arranged at one end of the shell, a sliding frame is arranged in the shell in a sliding mode, a fixing frame is fixed to the shell, a telescopic machine is arranged between the shell and the sliding frame and can push out the sliding frame, a fixing base is fixed to the sliding frame, the magnetizing mechanism is installed on the fixing base and used for adding magnetism to a pipeline, and the detecting mechanism is installed on the fixing base. The detection mechanism is used for detecting changes of a magnetic field in the pipeline. The magnetizing mechanism makes contact with the pipeline, a magnetic field is formed in the pipeline, then the situation of the magnetic field in the pipeline is observed through the detection mechanism, if the