The invention relates to a vegetable washing sink device combined with a function as a chopping board. The vegetable washing sink device comprises a vegetable washing sink body, a chopping board body, a vegetable washing folded board and a chopping board disinfecting and sterilizing device, a sliding groove is embedded in the top surface of the right side wall of the vegetable washing sink body, a supporting board capable of moving transversely is arranged on the left side of the vegetable washing sink body, a sliding clamping seat is fixed at the left end of the chopping board body, and the right end of the chopping board body is rotatably connected with a sliding plate; the vegetable washing folded board comprises an isosceles-trapezoid-shaped water permeable board and two right-triangle-shaped folded boards, a plurality of water permeable holes are formed in the water permeable board, the bottom edge of the water permeable board is rotatably connected onto the chopping board body, and inclined edges of the folded boards are rotatably connected onto inclined edges at two ends of the water permeable board respectively; the chopping board disinfecting and sterilizing device comprises a U-shaped disinfecting shell, a transverse drive device and a PLC (programmable logic controller), mounting chambers are formed on two sides of the disinfecting shell respectively, a plurality of ultraviolet disinfecting lamps are fixed in the mounting chambers, and irradiation holes communicating inner cavities of the mounting chambers are formed in two sides of a containing cavity of the disinfecting shell. The vegetable washing sink device integrates a vegetable washing sink with the chopping board and further integrates a function of disinfecting and sterilizing the chopping board.