The invention relates to the field of acrylic board for curtain wall splicing, in particular to an acrylic board for curtain wall splicing. The acrylic board comprises a first clamping board, a secondclamping board, a blocking mechanism, a sliding rod, a sliding groove, a compression spring, a first protrusion, a second protrusion, a reset spring, a clamping block, a clamping groove, an abuttingspring, a connecting mechanism, a first connecting rod, a second connecting rod, a stretchable mechanism and a pull rod. When the second clamping board and the second connecting rod are inserted, thesliding rod can abut against the side wall inside the second clamping board to move upwards, and therefore the sliding rod abuts against the second protrusion to drive one end of the clamping block toabut against the interior of the clamping groove, internal blocking of the second clamping board and the second connecting rod is achieved, the first clamping board and the second clamping board areprevented from being disengaged, and meanwhile, the installing efficiency is improved. When disassembling is needed, by pulling the first clamping board and the second clamping board, the first protrusion at the side wall of the sliding rod can move by disengaging the compression spring, the first protrusion is moved to the top of the second protrusion, the clamping block is disengaged from the clamping groove under the effect of the reset spring, and therefore disassembling can be performed conveniently.