Compared with the open-cut method, the pipe jacking and underground excavation method has the advantages of occupying less space and having a smaller impact on the surrounding environment. Especially when there are underground pipelines and other obstacles in the construction area, the pipe jacking and underground excavation method can avoid problems such as increased construction period and cost caused by the relocation of underground pipelines. Therefore, taking the underground pedestrian passage pipe jacking project of this project as an example, the minimum vertical clear distance of the rectangular pipe jacking is approximately 0.61m, and it passes under a ?1500mm rainwater pipe. From the perspective of the supervisory workers, this paper mainly introduces a series of protective measures taken when the rectangular pipe jacking passes under the rainwater pipe and the supervisory control requirements during the construction process. Ensure that the rectangular top pipe can smoothly pass under the ?1500mm rainwater pipe without settlement or damage.