The present invention provides a dust collector structure, especially a low-cost and simplified dust collector structure, which includes a leg frame set, an air-guiding box and a driving unit. The leg frame set includes two inverted U-shaped frame rods which are integrally formed and correspond to each other. The air-guiding box is arranged across top ends of the two frame rods, and is made by correspondingly closing an upper cover and a lower cover which are formed through integral draw molding. A driving unit for driving a blowing fan is arranged at an end of the air-guiding box. An air-filtering bag and a dust-collecting bag corresponding to each other are arranged at an end opposite to the driving unit on the upper and lower covers of the air-guiding box. Thus, structural components can be greatly simplified. Moreover, compared with a conventional locking or welding manner, since the upper and lower covers of the air-guiding box are integrally formed through a draw molding technique, the production yield and efficiency can be further improved, and the volume can be further reduced after the dust collector structure is folded away, so as to save space for transporting and storing.