The utility model belongs to the technical field of sliding table saws, and particularly relates to a saw blade replacing mechanism for a sliding table saw, which comprises a pre-inserting seat, a saw blade body, a pushing cover and an eccentric lock
handle piece, the eccentric lock
handle piece is provided with a tensioning
assembly attached to the pre-inserting seat, the pushing cover is arranged on the tensioning
assembly, and the saw blade body is arranged on the pushing cover. The saw blade is tightly pressed on the pre-
insertion seat through the eccentric lock
handle piece, and the pre-
insertion seat is provided with a limiting
assembly used for restraining springback of the eccentric lock handle piece. According to the utility model, the pre-
insertion seat is matched with the tensioning assembly and the eccentric lock handle piece, so that the mechanism can improve and optimize the replacement operation of the saw blade, and the saw blade can be assembled and fixed in advance. And during replacement, the eccentric lock handle piece can be clamped or released only by operating the eccentric lock handle piece, so that the mounting efficiency and convenience are improved, and the mounting risk is reduced.