PROBLEM TO BE SOLVED: To provide a filler capable of being manufactured by simple and trouble-free operation and reducing manufacturing cost while improving durability and organic material removing performance, and to provide a filler unit and an air purifying apparatus.SOLUTION: Filler 322 includes roving clothes 322a containing glass fiber and spacers 322b which are held between the roving clothes 322a respectively and are constituted by forming mesh composed of polypropylene in a corrugated shape.