The invention relates to a loading/unloading device used for loading and unloading a solar cell sheet in a quartz boat. The device comprises a work table, a silicon chip lift slicing mechanism arranged on the work table, a mechanical hand and a suction cup assembly arranged on the end part of the mechanical hand. The silicon chip lift slicing mechanism comprises a silicon chip slicing normalizing mechanism, a silicon chip lift mechanism and a quartz boat entry-exit mechanism. According to the invention, 2.38mm-spaced silicon chips in the half-space quartz boat with 200 slots are gripped and transferred in two times through the silicon chip slicing normalizing mechanism; each time of spacing, 100 chips are gripped; through the silicon chip slicing normalizing mechanism, the dense silicon chips in the half-space quartz boat with 200 slots are separated into large-spaced silicon chip groups, which is convenient for the gripping of the suction cup assembly; the device has the advantages of high work efficiency and high automation degree; the work intensity of workers is reduced; and the breakage rate of the silicon chips is effectively reduced.