The present invention discloses a combined wire fixer. The combined wire fixer comprises a plurality of substrates and a plurality of expansion sheets, one side of each substrate is provided with onebonding device, the other side of each substrate is provided with a plurality of wire ducts, and a plurality of insertion columns are uniformly arranged at the periphery of each substrate; one side ofeach expansion sheet is provided with one bonding device, the other side of each expansion sheet is provided with a plurality of wire ducts, a plurality of insertion grooves are uniformly arranged atthe periphery of each expansion sheet, and the insertion grooves are matched with the insertion columns to insert the expansion sheets into the peripheries of the substrates. The combined wire fixeris reasonable in structure and simple in assembling, can change shape or perform expansion according to the actual usage environments and usage demands, is high in applicability, can perform cable layering and grouping of each class of cable to disperse bearing and perform uniform bearing.