The invention discloses a fastening adsorbing deice and workpiece processing equipment thereof. The fastening adsorbing device comprises a fastening frame body, an adsorbing assembly, a structural strengthening inclined rod, two supporting plates and a plurality of structural strengthening transverse rods. The adsorbing assembly comprises a first vacuum air extractor, a second vacuum air extractor, a plurality of first adsorbing parts and a plurality of second adsorbing parts, wherein each adsorbing part is arranged on one supporting plate in a spaced mode, and is provided with a first avoiding slot; a first aspirating hole is formed in the bottom of each first avoiding slot; each first aspirating hole separately communicates with the first vacuum air extractor; each second adsorbing part is arranged on the other supporting plate in the spaced mode, and is provided with a second avoiding slot; a second aspirating hole is formed in the bottom of each second avoiding slot; and each second aspirating hole communicates with the second vacuum air extractor. The fastening adsorbing device can be used for supporting and adsorbing aluminum workpieces separately, so that the displacement problem of the aluminum workpieces is reduced in a welding process, and therefore, welding operation precision can be improved.