The utility model provides a double-lead petroleum casing pipe threaded connection mechanism and a casing pipe column thereof. The double-lead oil casing threaded connection mechanism comprises a double-lead oil casing threaded connection mechanism and a double-lead oil casing threaded connection mechanism, wherein the internal thread part and the internal torque shoulder are formed at one end ofthe first tubular part, the internal thread part is provided with an internal thread with a preset taper, the internal thread is a double-lead thread, the internal thread is provided with a pluralityof buttress internal thread teeth, and the guide surface angle of the internal thread teeth is larger than the bearing surface angle of the internal thread teeth; the external thread part and the external torque shoulder are formed at one end of the second tubular part, the external thread part is provided with an external thread with the same taper as the internal thread part, the external threadis a double-lead thread, the external thread is provided with a plurality of buttress external thread teeth, and the guide surface angle of the external thread teeth is larger than the bearing surface angle of the external thread teeth. The double-lead petroleum casing pipe threaded connection mechanism and the casing pipe column thereof are reliable in performance and capable of achieving rapidscrewing connection, and therefore operation time efficiency is greatly improved.