Portable Rebar Tier is a machine or tool used to tie rebar with wire. This tool consists of two main parts, namely the rebar holding part and the wire pressing part. The rebar holder part has two holes, namely the hole for inserting the rebar and the hole for inserting the wire. The wire pressing part has two arms, namely the arm used to clamp the wire and the arm used to press the wire. Portable Rebar Tier tool has several advantages compared to traditional binding methods, such as faster and more efficient, stronger and neater binding results, and reduced risk of work accidents.