The invention relates to a correction device for core geological body occurrence of an oil field. According to the technical scheme, azimuth angle data are calibrated on the outer side of a base; a sliding rail is fixed to the outer side of the base; a fixed shaft is arranged at the center; a rotating shaft is arranged outside the fixed shaft; a well deviation angle measuring device which can measure a well deviation angle of a core is arranged on the rotating shaft; a horizontal laser transmitter is arranged on the top of the rotating shaft; the sliding rail on the base is matched with a sliding device at the lower end of a telescopic shaft; the upper end of the telescopic shaft is connected with a fixed bracket; a core cylinder is fixed on the fixed bracket; the core is arranged in the core cylinder; a well deviation angle pointer is arranged at the inner end of the fixed bracket; a core cylinder rotating handle is arranged at the outer end of the fixed bracket; and a well deviation azimuth angle pointer is arranged on the sliding device. The correction device has the beneficial effects that the design is reasonable, the structure is simple, processing and manufacturing are easy, storing and maintain of an oil field core store are facilitated, using is convenient, operation is easy, the core geological body occurrence can be accurately determined, and the core in an inclined shaft can be subjected to directional marking.