Filter being suitable for air purifying and disinfecting machine

The invention discloses a filter being suitable for an air purifying and disinfecting machine, wherein a filter core is in a structure of a hollow cylinder and is formed by filter paper. The filter paper is in a structure of a WW-like corrugated paper. The two end of the filter are opened, wherein one end is provided with a support board and the other end is provided with a cover board. Air is entered through the center of the cylindrical filter core and is discharged through the circumference of the cylindrical filter core; or is entered through the circumference of the cylindrical filter and is discharged through the center of the cylindrical filter core. By means of the hollow cylindrical structure of the filter, air surrounding the machine can be sucked into the air purifying and disinfecting machine uniformly in a range of 360 degrees, or purified air can be all-around uniformly dispersed in room. The filter is good in effect and high in efficiency in air purification and disinfection.