A portable cable binding fixer, belonging to the technical field of cable laying, comprising a housing, in which an iron wire transmission channel is provided, a forward conveying device is provided in the middle of the iron wire transmission channel, a cutter is provided at the front of the iron wire transmission channel, and the iron wire transmission channel There is a binding disc at the front end of the channel, a trigger is installed in the housing, and the trigger is connected to a transmission rod. The transmission rod is connected to the forward conveying device through the forward transmission mechanism. The transmission rod is connected to the binding disc through the binding transmission mechanism. connect. The trigger drives the transmission rod to slide, the forward transmission mechanism drives the forward conveying device, and the iron wire is conveyed forward; the transmission rod drives the binding plate through the binding transmission mechanism to realize the bundling of cables, and the transmission rod drives the cutter through the connecting rod to cut the iron wire. The structure is simple , easy to use, high bundling efficiency, through the fixed mechanical transmission action, the bundling force is consistent, to ensure that the cables are not damaged during bundling, and the construction quality is guaranteed.