The invention relates to a floor drain capable of being filtered secondarily and collecting impurities, and belongs to the technical field of articles of daily use. The floor drain comprises a main flow tube, the main flow tube is connected with a secondary flow tube, the inner portion of the secondary flow tube is provided with a material collection bottle, the upper end of the secondary flow tube is provided with an end cover, and the end cover is in contact with the upper surface of the secondary flow tube. According to the floor drain capable of being filtered secondarily and collecting the impurities, the impurities flow into the material collection bottle by the tilting action of a first filtering net, thereby preventing the impurities from flowing into a sewer and causing the blockage of the sewer after a long time, and the unobstruction of a drainage system is fully ensured; sewage and the impurities in the material collection bottle can be quickly separated under the action ofa second filtering screen in the material collection bottle, the sewage in the material collection bottle can be automatically discharged, and thereby the problems are solved that the impurities attached to the surface of a floor drain port cannot be collected and treated at one time, and the cleaning of the floor drain port is tedious.