The utility model relates to a pipeline filtering treatment device, which comprises a cylinder body and a filter basket, wherein the cylinder body is a three-way pipe; two ends of a cut-through pipe of the three-way pipe are an inlet end and an outlet end respectively; the lower end of a bulged pipe of the three-way pipe is closed; a basket opening of the filter basket is connected to the inner wall of the inlet end of the cut-through pipe; and a basket body of the filter basket is arranged in the bulged pipe of the three-way pipe. By the pipeline filtering treatment device, the filter basket is large in filter area and high in filter efficiency, and smooth conveying of fluid is ensured.