The invention discloses a dust collector system which comprises N dust collector units, an inner dedusting pipe, an outer dedusting pipe, N first drive mechanisms, a second drive mechanism and a controller, wherein a gas supplying pipe is connected with the lower side of each dust collector unit; N first ports are uniformly formed in the inner dedusting pipe; the outer dedusting pipe sleeves outsides the inner dedusting pipe in a sliding manner; N second ports are uniformly formed in the outer dedusting pipe; the lower part of each gas supplying pipe penetrates through one second port; the tail end of the inner dedusting pipe is connected to dust-containing gas generation equipment through a second hose; and the controller controls the second drive mechanism to drive the inner dedusting pipe to slide a certain distance along the outer dedusting pipe to enable the M first ports and the M second ports to be mutually aligned, then also controls the first drive mechanisms to drive the M gas supplying pipes to move downwards until the lower ends of the M gas supplying pipes are inserted to the M first ports respectively and then controls the M dust collector units to work, and M is larger than or equal to 1 and smaller than or equal to N. The dust collector system can flexibly regulate the amount of the dust collector units according to the needs.