The invention discloses a substandard cigarette butt treatment and reclaiming process, which solves the problem that substandard cigarette butts enter the society, so as to reclaim and reuse cigarettebutt fiber. The process comprises the four following work steps: work step one, the cigarette butts are scattered and winnowed; the substandard cigarette butts enter a winnowing machine after being scattered; tobacco shred wrapping paper is separated from the cigarette butts; work step two, the sieving, the flow control, the automatic humidification and the storage of the cigarette butts are performed; tobacco shreds are separated by a variation sieve; the cigarette butts enter a feeding machine; when a material level reaches a certain height, a belt conveyer stops supplying material; the flow of the cigarette butts is controlled by the feeding machine; a photoelectric switch automatically controls a spray nozzle to humidify the cigarette butts; work step three, the paper take-off, the cotton delivery and the paper bundle separation of the cigarette butts are performed; the cigarette butt wrapping paper and the cigarette butt fiber are realized through four continuous (series-connected) separating machines which are charged with cut paper bundles and rolled paper bundles which are spirally arranged, and connected through material delivery pipes II; work step four: the wind discharge and the collection of fiber cotton are performed. By adopting the method, the wind power is effectively relieved, and dust is prevented from being discharged to the air, so as to prevent environmental pollution.