PVC (polyvinyl chloride) same-layer drainage floor drain

The invention discloses a PVC same-layer drainage floor drain which comprises a drainage collector, a drainage same-layer floor drain assembly is arranged at the upper end of the drainage collector, a secondary drainage floor drain assembly and a filtering collector assembly are arranged in the circumferential direction of the drainage collector, and the secondary drainage floor drain assembly and the filtering collector assembly are communicated through the drainage collector. Water flow from the drainage same-layer floor drain assembly and the secondary drainage floor drain assembly sequentially passes through the drainage collector and the filter collector assembly, compared with a traditional same-layer drainage floor drain which only has a single channel for drainage, the same-layer drainage floor drain is provided with two channels for independent drainage, the drainage same-layer floor drain assembly is arranged in the drainage water inlet of the shower, and the drainage water inlet of the shower is co