Abstract: An improved structure of a cigarette filter and its receptacle, wherein several filters cap one another in the receptacle having the same length as that of a cigarette and stored in a cigarette box for convenient use and carrying; a port for loading or taking a filter is provided on the top of the receptacle, a flange is provided on the inner side of the port for abutting against a convex annular portion on the bottom external side of a cigarette seat of a filter, thus prevents the filter from dropping inadvertently; a clip for clamping on a cigarette box or a pocket like a clip on a pen cap is provided on the upper portion of the receptacle, the bottom of the receptacle is formed as a sucking piece on the filter such that the receptacle can receive more filters therein and has a more beautiful appearance.