The invention discloses a composite connection ring. The composite connection ring comprises at least two ring bodies. Each ring body is provided with a clamping groove, a protrusion and a connection opening. The clamping grooves and the protrusions are arranged on the two sides of each ring body respectively, and the clamping grooves and the protrusions are arranged in the circumferential directions of the ring bodies. The protrusion on one ring body is tightly matched with the clamping groove of the other ring body. According to the composite connection ring, multiple ring bodies can be used in combination through tight matching of the protrusion on one ring body and the clamping groove of the other ring body. When the tension of certain connecting pieces is high, the multiple ring bodies can be combined according to needs in order to adapt to the connecting pieces with different tensions, so the use cost is lowered, and waste is avoided.