Building drainage pipeline blockage monitoring and alarming system

The utility model discloses a building drainage pipeline blockage monitoring and alarming system, which relates to the technical field of building drainage and comprises a drainage main vertical pipe connected with an underground first-floor drainage home outlet pipeline, a bypass monitoring pipe, a blockage monitoring device and a signal collecting and early warning system. The blockage monitoring device is installed on the bypass monitoring pipe, a transparent observation pipe section is arranged at the position, where the blockage monitoring device is installed, of the bypass monitoring pipe, and the signal collecting and early warning system is electrically connected with the blockage monitoring device and comprises a DTU remote forwarding and receiving module and a property management platform. The normal operation state of the drainage pipeline is effectively monitored and fed back in time, and the situation that the drainage pipeline is blocked, and heavy property losses and property disputes such as b