Breathing filter for nose

The invention relates to a breathing filter for the nose and belongs to a body health protecting device. As shown in the figure, the breathing filter is composed of a filter body (1), catheters (2), rhinobyons (3), a support (4) and an elastic band (5). As shown in the figure, the filter body (1) is of a bag shape, and the surface layer is made of a replaceable filtering material. The filter body can be placed on the rear of the neck or the front of the chest of a wearer after being worn. The two ends of the filter body are connected with the two soft catheters. The other ends of the two catheters are connected with the two spinal-canal-like rhinobyons. The two rhinobyons are connected through one support. The two ends of the support are connected with one elastic band. The elastic band is used for being arranged on the portions, above the ears, of the rear of the head of the wearer in a sleeved mode so that the two rhinobyons can be fixed. Due to the structure, when the wearer inhales, air in environment is