A razor cartridge comprising: a plurality of razor blades installed in one direction of a cartridge frame; and a trimmer installed in the other direction of the cartridge frame, wherein the trimmer includes: a trimming blade seated in a seating groove formed in the cartridge frame; and a trimmer cap coupled to both sides of the cartridge frame so that the trimming blade is fixed, wherein the trimmer cap includes: a body part seated in the seating groove and configured to cover the trimming blade; and coupling parts respectively formed at both sides of the body part, wherein the body part and the coupling parts of the trimmer cap are formed to be stepped so that heights of the body part and the coupling parts are different, and wherein at both sides of the seating groove of the cartridge frame, a first coupling groove is formed by a predetermined depth in a first direction, and a second coupling groove is formed in a direction intersecting the first direction from an end of the first coupling groove; and the coupling parts of the trimmer cap include a first coupling part configured to be inserted into the first coupling groove, and a second coupling part configured to be inserted into the second coupling groove. a plurality of razor blades installed in one direction of a cartridge frame; and a trimmer installed in the other direction of the cartridge frame, wherein the trimmer includes: a trimming blade seated in a seating groove formed in the cartridge frame; and a trimmer cap coupled to both sides of the cartridge frame so that the trimming blade is fixed, wherein the trimmer cap includes: a body part seated in the seating groove and configured to cover the trimming blade; and coupling parts respectively formed at both sides of the body part, wherein the body part and the coupling parts of the trimmer cap are formed to be stepped so that heights of the body part and the coupling parts are different, and wherein at both sides of the seating groove of the cartridge frame, a first coupling groove is formed by a predetermined depth in a first direction, and a second coupling groove is formed in a direction intersecting the first direction from an end of the first coupling groove; and the coupling parts of the trimmer cap include a first coupling part configured to be inserted into the first coupling groove, and a second coupling part configured to be inserted into the second coupling groove. a trimming blade seated in a seating groove formed in the cartridge frame; and a trimmer cap coupled to both sides of the cartridge frame so that the trimming blade is fixed, wherein the trimmer cap includes: a body part seated in the seating groove and configured to cover the trimming blade; and coupling parts respectively formed at both sides of the body part, wherein the body part and the coupling parts of the trimmer cap are formed to be stepped so that heights of the body part and the coupling parts are different, and wherein at both sides of the seating groove of the cartridge frame, a first coupling groove is formed by a predetermined depth in a first direction, and a second coupling groove is formed in a direction intersecting the first direction from an end of the first coupling groove; and the coupling parts of the trimmer cap include a first coupling part configured to be inserted into the first coupling groove, and a second coupling part configured to be inserted into the second coupling groove. a body part seated in the seating groove and configured to cover the trimming blade; and coupling parts respectively formed at both sides of the body part, wherein the body part and the coupling parts of the trimmer cap are formed to be stepped so that heights of the body part and the coupling parts are different, and wherein at both sides of the seating groove of the cartridge frame, a first coupling groove is formed by a predetermined depth in a first direction, and a second coupling groove is formed in a direction intersecting the first direction from an end of the first coupling groove; and the coupling parts of the trimmer cap include a first coupling part configured to be inserted into the first coupling groove, and a second coupling part configured to be inserted into the second coupling groove.