The invention relates to an object transfer tray assembly, a receiving tray of the assembly and a transferring method. The object transfer tray assembly comprises a transferring tray and the receiving tray, wherein the transferring tray comprises a transfer longitudinal beam and a plurality of transfer transverse strips, the receiving tray comprises two receiving longitudinal beams, two receiving transverse beams and a plurality of receiving transverse strips, at least one receiving longitudinal beam is a movable longitudinal beam, and therefore when one movable longitudinal beam is dismounted, receiving abut-inserting gaps used for allowing the transferring transverse strips to be inserted are formed by the adjacent receiving transverse strips, wherein the corresponding transverse ends of the receiving abut-inserting gaps are of an opening structure, and the transferring transverse strips on the transferring tray protrude out of the transferring longitudinal beam so as to enable the adjacent transferring transverse strips to form transferring abut-inserting gaps used for allowing the receiving transverse strips of the receiving tray to be inserted; when objects are transferred, the movable longitudinal beams are dismounted, the transferring tray and the receiving tray are in abut inserting, and therefore the objects are transferred, a clamping device does not need to be additionally arranged, and operation is relatively easy.