A venturi-integrated scrubber apparatus comprising: a scrubber body formed in a lower portion thereof with a gas inlet for introducing exhaust gas, formed in an upper portion thereof with a gas outlet for discharging the exhaust gas to an outside, and having an inside empty to provide a main flow channel to allow the exhaust gas to move; at least one collection layer installed inside the scrubber body; a venturi unit installed at a lower inner portion of the scrubber main body to allow the gas inlet to communicate with the main flow channel and provided with at least one venturi conduit through which the exhaust gas passes; and a plurality of cleaning water spraying pipes installed along a movement path of the exhaust gas to multi-spray cleaning water in a forward direction of the exhaust gas, wherein the scrubber body is configured by connecting box-shaped tubular members having a rectangular polyhedral shape in multiple stages, and installed at the lower portion thereof with at least one drain hole for discharging the cleaning water to the outside, and the venturi unit includes a partition wall horizontally installed to block a part of the main flow channel, and at least one guide member disposed between a lower side of the scrubber body and the partition wall so that the venturi conduit is spaced apart, in which the guide member includes a support having both ends coupled to the both side walls of the scrubber body, respectively, characterized in that the guide member includes guide vanes installed to face each other on upper and lower sides in a longitudinal direction of the support and provided to form an outwardly convex arc surface so that the venturi conduit formed between the guide members is narrowed. a scrubber body formed in a lower portion thereof with a gas inlet for introducing exhaust gas, formed in an upper portion thereof with a gas outlet for discharging the exhaust gas to an outside, and having an inside empty to provide a main flow channel to allow the exhaust gas to move; at least one collection layer installed inside the scrubber body; a venturi unit installed at a lower inner portion of the scrubber main body to allow the gas inlet to communicate with the main flow channel and provided with at least one venturi conduit through which the exhaust gas passes; and a plurality of cleaning water spraying pipes installed along a movement path of the exhaust gas to multi-spray cleaning water in a forward direction of the exhaust gas, wherein the scrubber body is configured by connecting box-shaped tubular members having a rectangular polyhedral shape in multiple stages, and installed at the lower portion thereof with at least one drain hole for discharging the cleaning water to the outside, and the venturi unit includes a partition wall horizontally installed to block a part of the main flow channel, and at least one guide member disposed between a lower side of the scrubber body and the partition wall so that the venturi conduit is spaced apart, in which the guide member includes a support having both ends coupled to the both side walls of the scrubber body, respectively, characterized in that the guide member includes guide vanes installed to face each other on upper and lower sides in a longitudinal direction of the support and provided to form an outwardly convex arc surface so that the venturi conduit formed between the guide members is narrowed.