The invention relates to a multi-station heptafluoropropane automatic filling method. The method is mainly suitable for conducting automatic filling of heptafluoropropane fire extinguishing agents on firefighting bottles. A computer provided with a capture card, a driving card and corresponding software, or a PLC system provided with a touch screen serves as a control center, real-time monitoring on the pipeline pressure and the filling weight are achieved through a vacuum pressure sensor, a nitrogen pressure sensor and an electronic scale, and by controlling a vacuum pump and an electromagnetic valve through the control center, full-automatic and high-efficiency heptafluoropropane fire extinguishing agent filling is achieved. According to the method, by connecting a plurality of automatic heptafluoropropane filling stations in parallel, automatic filling of the heptafluoropropane fire extinguishing agents of the multiple firefighting bottles is achieved at the same time, the filling efficiency is greatly improved, and the method has the advantages of being high in automation level, efficiency and precision, good in consistency and the like.