To provide a vacuum sewerage system which allows a vacuum valve to reliably open or close for water catchment, even for piping with a lift part at a location having a high lifting height due to a steep slope or a large difference in elevation under restricted conditions resulting from the shape of a site.

A vacuum sewerage system is provided with a vacuum valve unit 13 which includes a sewage container 1 in which a sewage w is temporarily reserved and a vacuum valve unit 3 which is opened or closed by vacuum pressure fed through a pressure leading pipe 6 for discharging the two-phase flow of gas-liquid mixture to a vacuum sewage branch pipe 2 connected to a vacuum sewage main pipe 7 for transferring the sewage w to a water catchment tank 16 of a vacuum station 15 with vacuum pressure. The vacuum sewage branch pipe 2 upstream from the connection position is provided with a lift part 2c having a rising slope. The pressure leading pipe 6 is provided with a negative pressure drawing part 6b which draws the negative pressure from the vacuum sewage main pipe 7 at the upper side face 7a of the vacuum sewage main pipe 7, downstream from a confluent position 2b with a predetermined dimension ML.