The invention relates to a low-resistance large liquid holdup tower plate, belonging to the technical field of chemical tower tray member. The low-resistance large liquid holdup tower plate comprises a tower plate body; one side of the tower plate body is divided by an overflow dam baffle so as to form a flow receiving area and a down-flow area which are adjacent each other; and the opposite sidethereof is provided with a sunken settling tank; the tower plate body forms a first gas-liquid contact area between the overflow dam baffle and the settling tank; the first gas-liquid contact area isprovided with a first gas-liquid contact mass transfer part and a guide flow dam baffle which divides the first gas-liquid contact area; and the bottom part of the sunken settling tank is provided with a second gas-liquid contact mass transfer part and forms a second gas-liquid contact area. The low-resistance large liquid holdup tower plate can improve the efficiency of gas-liquid contact mass transfer on the basis of no increasing for the pressure drop of the air flow.