The utility model relates to a buried pipeline cathode protection system of a long-distance pipeline process station. The buried pipeline cathode protection system comprises an external current device, an auxiliary anode ground bed, a sacrificial anode and electrical connectors, wherein the anode of the external current device is connected with the auxiliary anode ground bed, the cathode of the external current device is connected with a buried pipeline, the sacrificial anode is arranged at the buried pipeline located at an under protection state in theory in the case that no sacrificial anode exists and is electrically connected with the buried pipeline at the position, and the electrical connectors are arranged between the buried pipelines paved in the same ditch, between the parallel buried pipelines in short distance, between crossed buried pipelines and different pipe segments of the same buried pipeline connected in a non-welding manner. The system is used for solving the over protection, under protection and stray current interference problems caused by shielding, realizing omnibearing cathode protection on underground metal structures of the process station, improving the safety coefficients of ground equipment, electric appliance facilities and personnel of the process station and laying a foundation for formulating cathode protection technical manuals of the process station.