A detergent dispensing device for a household appliance, comprising: a body having a dispensing port through which a treating agent is dispensed to a preset position in the body, wherein the body has a bottom wall and a box-shaped structure enclosed by a side wall projecting upwards from the bottom wall; wherein a detergent cavity is provided at a rear portion of the dispensing port, and wherein, in use, the treating agent is dispensed into the detergent cavity via the dispensing port; a liquid feeding channel is provided in the detergent cavity and provided with a liquid inlet configured to introduce a diluent, at least one liquid feeding channel being provided with a plurality of diluent outlets (16-1, 16-2, 16-3), and the liquid feeding channel being configured to guide the diluent to the plurality of diluent outlets (16-1, 16-2, 16-3) to discharge the diluent, so as to mix the diluent with the treating agent to form a mixed liquid; wherein each of the plurality of diluent outlets (16-1, 16-2, 16-3) are arranged in different positions with respect to each other in the liquid feeding channel, wherein the plurality of diluent outlets (16-1, 16-2, 16-3) open towards a preset position, such that the diluent flows towards the preset position after being discharged from the plurality of diluent outlets, wherein the plurality of diluent outlets comprises a first diluent outlet, a second diluent outlet and a third diluent outlet, and the preset position is located between the first diluent outlet and the second diluent outlet and/or the third diluent outlet; and wherein the dispensing device further comprises a cover for covering the body, and a liquid outlet is provided between a front end of the liquid feeding channel and the dispensing port, such that a detergent mixed liquid formed by adequately mixing the diluent in the three directions can overflow via the liquid outlet out of the body, wherein the liquid feeding channel comprises a first flow limiting wall, a second flow limiting wall and a third flow limiting wall, wherein the first flow limiting wall, the second flow limiting wall and the third flow limiting wall are formed by the bottom wall, wherein the bottom wall is configured to project upwards, and at least parts of the flow limiting wall and the second flow limiting wall are connected to the cover, such that at least a part of the liquid feeding channel is formed into a closed channel; characterized in that the dispensing port is provided at one end of the body, the liquid inlet is provided at the other end opposite to the dispensing port, and the preset position is adjacent to the liquid inlet; and the first flow limiting wall comprises a left side wall and a right side wall connected to each other by an arc wall, and the second flow limiting wall is inserted between the left side wall and the right side wall. a body having a dispensing port through which a treating agent is dispensed to a preset position in the body, wherein the body has a bottom wall and a box-shaped structure enclosed by a side wall projecting upwards from the bottom wall; wherein a detergent cavity is provided at a rear portion of the dispensing port, and wherein, in use, the treating agent is dispensed into the detergent cavity via the dispensing port; a liquid feeding channel is provided in the detergent cavity and provided with a liquid inlet configured to introduce a diluent, at least one liquid feeding channel being provided with a plurality of diluent outlets (16-1, 16-2, 16-3), and the liquid feeding channel being configured to guide the diluent to the plurality of diluent outlets (16-1, 16-2, 16-3) to discharge the diluent, so as to mix the diluent with the treating agent to form a mixed liquid; wherein each of the plurality of diluent outlets (16-1, 16-2, 16-3) are arranged in different positions with respect to each other in the liquid feeding channel, wherein the plurality of diluent outlets (16-1, 16-2, 16-3) open towards a preset position, such that the diluent flows towards the preset position after being discharged from the plurality of diluent outlets, wherein the plurality of diluent outlets comprises a first diluent outlet, a second diluent outlet and a third diluent outlet, and the preset position is located between the first diluent outlet and the second diluent outlet and/or the third diluent outlet; and wherein the dispensing device further comprises a cover for covering the body, and a liquid outlet is provided between a front end of the liquid feeding channel and the dispensing port, such that a detergent mixed liquid formed by adequately mixing the diluent in the three directions can overflow via the liquid outlet out of the body, wherein the liquid feeding channel comprises a first flow limiting wall, a second flow limiting wall and a third flow limiting wall, wherein the first flow limiting wall, the second flow limiting wall and the third flow limiting wall are formed by the bottom wall, wherein the bottom wall is configured to project upwards, and at least parts of the flow limiting wall and the second flow limiting wall are connected to the cover, such that at least a part of the liquid feeding channel is formed into a closed channel; characterized in that the dispensing port is provided at one end of the body, the liquid inlet is provided at the other end opposite to the dispensing port, and the preset position is adjacent to the liquid inlet; and the first flow limiting wall comprises a left side wall and a right side wall connected to each other by an arc wall, and the second flow limiting wall is inserted between the left side wall and the right side wall.