An outdoor unit of an air-conditioner, comprising: a main body in which is an outlet for discharging an outdoor air sucked into the inside thereof; an outdoor heat exchanger that is provided inside the main body and performs heat exchange between the outdoor air and a refrigerant; a fan that is rotated for forcibly flowing the outdoor air and, has a trailing edge extending from a center of the fan to an outside thereof and then bent and extending in the rotating direction of the fan; and a discharge grill that is provided in the outlet in a circular form, wherein the discharge grill includes: a central part positioned at the center of a circle; a plurality of grill parts (113, 114) that are each extended from the central part to an edge, wherein the plurality of grill parts (113,114) include a plurality of first grill parts positioned along a rotating orbit of the fan and a plurality of second grill parts connected to the plurality of first grill parts; and an edge part that forms the edge and is connected to the plurality of second grill parts, wherein the plurality of second grill parts are extended in the same shape as a trailing edge extending from a center of the fan to an outside thereof and then bent and extending in the rotating direction of the fan, characterized in that the second grill parts are connected to the central part in a tilted state based on the rotating orbit of the fan, wherein a tilted angle (a) with respect to the rotating orbit of the fan of a first portion of the second grill parts is smaller than a tilted angle (b) with respect to the rotating orbit of the fan of a second portion of the second grill parts, and wherein the tilted angle (b) of the second portion is smaller than a tilted angle (c) with respect to the rotating orbit of the fan of a third portion of the second grill parts, wherein the first portion is the nearest to the central part among the three portions, the second portion is secondly nearest thereto, and the third portion farthest therefrom. a main body in which is an outlet for discharging an outdoor air sucked into the inside thereof; an outdoor heat exchanger that is provided inside the main body and performs heat exchange between the outdoor air and a refrigerant; a fan that is rotated for forcibly flowing the outdoor air and, has a trailing edge extending from a center of the fan to an outside thereof and then bent and extending in the rotating direction of the fan; and a discharge grill that is provided in the outlet in a circular form, wherein the discharge grill includes: a central part positioned at the center of a circle; a plurality of grill parts (113, 114) that are each extended from the central part to an edge, wherein the plurality of grill parts (113,114) include a plurality of first grill parts positioned along a rotating orbit of the fan and a plurality of second grill parts connected to the plurality of first grill parts; and an edge part that forms the edge and is connected to the plurality of second grill parts, wherein the plurality of second grill parts are extended in the same shape as a trailing edge extending from a center of the fan to an outside thereof and then bent and extending in the rotating direction of the fan, characterized in that the second grill parts are connected to the central part in a tilted state based on the rotating orbit of the fan, wherein a tilted angle (a) with respect to the rotating orbit of the fan of a first portion of the second grill parts is smaller than a tilted angle (b) with respect to the rotating orbit of the fan of a second portion of the second grill parts, and wherein the tilted angle (b) of the second portion is smaller than a tilted angle (c) with respect to the rotating orbit of the fan of a third portion of the second grill parts, wherein the first portion is the nearest to the central part among the three portions, the second portion is secondly nearest thereto, and the third portion farthest therefrom. a central part positioned at the center of a circle; a plurality of grill parts (113, 114) that are each extended from the central part to an edge, wherein the plurality of grill parts (113,114) include a plurality of first grill parts positioned along a rotating orbit of the fan and a plurality of second grill parts connected to the plurality of first grill parts; and an edge part that forms the edge and is connected to the plurality of second grill parts, wherein the plurality of second grill parts are extended in the same shape as a trailing edge extending from a center of the fan to an outside thereof and then bent and extending in the rotating direction of the fan, characterized in that the second grill parts are connected to the central part in a tilted state based on the rotating orbit of the fan, wherein a tilted angle (a) with respect to the rotating orbit of the fan of a first portion of the second grill parts is smaller than a tilted angle (b) with respect to the rotating orbit of the fan of a second portion of the second grill parts, and wherein the tilted angle (b) of the second portion is smaller than a tilted angle (c) with respect to the rotating orbit of the fan of a third portion of the second grill parts, wherein the first portion is the nearest to the central part among the three portions, the second portion is secondly nearest thereto, and the third portion farthest therefrom.