Abstract: A stone-top sink board arrangement includes a sink board having a through hole, a reinforcing panel overlappedly mounted underneath the sink board, wherein the reinforcing panel has a guiding hole coaxially aligning with the through hole of the sink board, a mounting unit arranged for securely mounting the top surrounding edge of the bowl to the reinforcing panel, and at least two supporting flanges. Therefore, by securely mounting on inner sides of two supporting walls respectively of a cabinet, the reinforcing panel is substantially supported on the supporting flanges while the sink board is sitting on top of the cabinet.