The invention discloses a pipe network pressure control system. The pipe network pressure control system comprises a pipe network, a pressure reducing valve, a pressure controller, a pressure acquisition terminal and an information processing center, wherein the pressure controller and the pressure acquisition terminal are connected with the information processing center in a wireless communication mode respectively; the pressure controller mainly comprises a main processor, a wireless communication module, an electromagnetic valve, a digital pressure sensor, a pressure adjustment actuator used for adjusting the pressure of the pressure reducing valve, and a hose hoop consisting of hoses; and the main processor controls the electromagnetic valve to perform positive or negative adjustment by comparing a normal pressure value with a pressure value of an outlet of the pressure reducing valve so as to control the pressure adjustment actuator to adjust the pressure of the outlet of the pressure reducing valve. The pipe network pressure control system has the advantages of grasping the dynamic operational parameter condition of the pipe network in real time, dynamically optimizing and stably adjusting the pressure of the pipe network when demands are changed, improving the management, check and maintenance levels of the pipe network, improving the safe and stable running capacity ofthe pipe network, and the like.