A cardiac valve fixing device comprising: a first structure adapted to continuously come into contact with the lower surface of the cardiac valve; and a second structure that is connected to the first structure and adapted to continuously come into contact with the upper surface of the cardiac valve; wherein the cardiac valve fixing device further comprises: fixing barbs that are provided in the first structure and the second structure, and which are formed to protrude in a direction of the cardiac valve, and are adapted to be inserted into the cardiac valve, and a connecting portion that is disposed between the first structure and the second structure and connects the first structure and the second structure, and wherein the connecting portion has an outer diameter formed to be relatively smaller than the first structure and the second structure, wherein the first structure includes a first protruding portion formed to protrude outward from a center of the first structure and a first recessed portion recessed towards the center of the first structure and continuously connected to the first protruding portion to form a periphery of the first structure, wherein the first recessed portion forms a space configured for a valve muscle fiber to be located therein, wherein the second structure includes a second protruding portion formed to protrude outward from a center of the second structure and a second recessed portion recessed towards the center of the second structure and continuously connected to the second protruding portion to form a periphery of the second structure, and wherein the fixing barbs are formed on the outside along the peripheries of the first structure and the second structure, characterized in that the connecting portion is made of a wire of a flexible material to interconnect the first structure and the second structure, and is configured to maintain an interval so that the first structure and that the second structure are disposed to be spaced apart from each other. a first structure adapted to continuously come into contact with the lower surface of the cardiac valve; and a second structure that is connected to the first structure and adapted to continuously come into contact with the upper surface of the cardiac valve; wherein the cardiac valve fixing device further comprises: fixing barbs that are provided in the first structure and the second structure, and which are formed to protrude in a direction of the cardiac valve, and are adapted to be inserted into the cardiac valve, and a connecting portion that is disposed between the first structure and the second structure and connects the first structure and the second structure, and wherein the connecting portion has an outer diameter formed to be relatively smaller than the first structure and the second structure, fixing barbs that are provided in the first structure and the second structure, and which are formed to protrude in a direction of the cardiac valve, and are adapted to be inserted into the cardiac valve, and a connecting portion that is disposed between the first structure and the second structure and connects the first structure and the second structure, and wherein the connecting portion has an outer diameter formed to be relatively smaller than the first structure and the second structure, wherein the first structure includes a first protruding portion formed to protrude outward from a center of the first structure and a first recessed portion recessed towards the center of the first structure and continuously connected to the first protruding portion to form a periphery of the first structure, wherein the first recessed portion forms a space configured for a valve muscle fiber to be located therein, wherein the second structure includes a second protruding portion formed to protrude outward from a center of the second structure and a second recessed portion recessed towards the center of the second structure and continuously connected to the second protruding portion to form a periphery of the second structure, and wherein the fixing barbs are formed on the outside along the peripheries of the first structure and the second structure,