Environment-friendly confluence, collection and discharging pipeline maintenance device and working method thereof

The invention discloses an environment-friendly confluence, collection and discharging pipeline maintenance device and a working method thereof. The environment-friendly confluence, collection and discharging pipeline maintenance device comprises a confluence, collection and discharging maintenance device group, a communication part, a tail end water discharging part, a confluence part, an operation device, a flexible water discharging pipe and filtering elements; a plurality of mounting holes are planned and formed in a building floor; the confluence, collection and discharging maintenance device group is arranged below the building floor; the communication part and the confluence part of the confluence, collection and discharging maintenance device group are communicated with all the mounting holes; then the flexible water discharging pipe and the tail end water discharging part of the confluence, collection and discharging maintenance device group are communicated; the filtering elements pass through the m