The invention relates to a self-replacing type circulating filter cloth device. A brand-new structural design is adopted, through a combination structure of a first detent plate (1) and a second detent plate (2), on one hand, a channel to be filtered is communicated with, on the other hand, a filter cloth mobile channel which is perpendicular to the channel to be filtered is constructed and obtained, so that a staggered form working state is formed; the structures are regarded as a structural basis, designed structures of driving shafts and exhausting hoods (8) are introduced on an outer circulating channel structure which is perpendicularly constructed opposite to the filter cloth inlet and aiming at each driving dust removal device, and through gas flow exhausted by the exhausting hoods (8) arranged on all the driving dust removal devices, dust removal is conducted aiming at the surface of filter cloth, and thus the service life of the filter cloth is prolonged. Through the structural design, the manual replacing period of the filter cloth is prolonged, the using efficiency of the filter cloth is sharply improved, the service life of the filter cloth is sharply prolonged, and the practical efficiency of a filtering device is improved.