Building drainage pipe convenient to splice

The building drainage pipe convenient to splice comprises a pipeline and a connector, the pipeline is connected to the inner side of the connector in an inserted mode, annular wall grooves are symmetrically formed in the pipeline, installation grooves are symmetrically formed in the inner wall of the connector, positioning arc blocks are arranged on the inner sides of the installation grooves in a sliding mode, and the positioning arc blocks are connected to the inner sides of the annular wall grooves in an inserted mode. The pipeline is inserted into the inner side of the joint, the positioning arc block is pushed to be inserted into the inner side of the annular wall groove through the elastic force of the spring to position the pipeline, the sealing ring is inserted into the inner side of the annular wall groove to seal the joint, the pipeline can be taken out from the inner side of the joint only by pulling the push-pull pin to be separated from the annular wall groove, and the pipeline is convenient to c