The present invention provides an assembly structure of a mattress and a bed body, comprising a bed body, a mattress, a multi-array connector and a locking member, the bed body having a plurality of coupling holes and a positioning hole, each of the coupling holes respectively having a large hole And a small hole portion, the positioning hole has a circular hole portion and a second card slot； the mattress has a through hole, and the plurality of connecting pieces are combined with the mattress, each of the connecting members has a lower blocking piece, and each of the connecting pieces Passing through each of the coupling holes respectively, and moving from the large hole portion to the small hole portion, each of the lower blocking pieces abutting the bed body around the outer side of the small hole portion； the locking member has two wings, which can pass through the through hole The hole and the positioning hole rotate the locking member so that the two wings are offset from the two card slots and abut against the bed around the positioning hole, and the reverse operation can cancel the assembly.本創作提供一種床墊與床體的組裝結構，包含床體、床墊、複數組接件與一鎖定件，該床體具有複數結合孔與一定位孔，各該結合孔分別具有一大孔部與一小孔部，該定位孔具有一圓孔部與二卡槽；該床墊具有一通孔，複數組接件結合該床墊，各該組接件具有一下擋片，各該組接件分別穿過各該結合孔，並且由大孔部往小孔部移動，各該下擋片抵著各該小孔部外周圍的床體；該鎖定件具有二翼片，可穿過該通孔、該定位孔，旋轉該鎖定件使該二翼片錯開該二卡槽後抵著該定位孔外周圍的床體，反向操作可解除組接。
