The utility model relates to a stable oil pump cooling water closed circulating system for an oil-gas gathering and transportation combined station. The stable oil pump cooling water closed circulating system can prevent calcium ions in cooling water from being separated out, prevent a cooling chamber of cooled equipment from being scaled and ensure normal operation of a crude oil stabilizing system and also can be used in a cooling process of the cooled equipment in the petrochemical industry and implementing closed circulation of the cooling water. The system comprises a pipeline pump and a radiator; and the pipeline pump is in closed circulating connection with the cooling chamber of the cooled equipment and the radiator by cooling water circulating pipelines, so that the cooling water in the cooling water circulating pipelines is in a sealed circulating state, separation of the calcium ions is reduced and the cooling chamber is prevented from being scaled. According to the stable oil pump cooling water closed circulating system, a heating pump and a heat exchange pump of the combined station operate stably; workload of maintenance and maintenance cost are reduced; when stable operation of the heating pump and the heat exchange pump is implemented, the integral stabilizing system also operates stably; and production cost is reduced. The stable oil pump cooling water closed circulating system for the oil-gas gathering and transportation combined station also sufficiently utilizes dissipated heat and has good economic effects and social effects.