The invention discloses a novel container bag with a filtering function, and belongs to the field of container bag technology equipment. The bag is characterized by comprising a filter layer and a knitted fabric layer, the knitted fabric layer is disposed outside the filter layer, filter holes are formed in the filter layer, vent holes are formed in the knitted fabric layer, the vent hole diameteris larger than the diameter of the filter holes, and the edge of the filter layer is connected to the edge of the knitted fabric layer. The filter layer is made of a non-woven fabric, and the knittedfabric layer is a knitted fabric. A plurality of the vent holes and the filter holes are respectively spaced apart from each other on the knitted fabric layer and the filter layer. A plurality of drying bars are disposed between the filter layer and the knitted fabric layer, and the drying bars are arranged in a rectangular shape. The bag can effectively filter shipping articles and have the filtering function with the ventilation function on the basis of ensuring the weight bearing.