Portable site line drawing accurate construction device

The utility model provides a portable site line drawing accurate construction device which comprises a supporting rod, and the supporting rod is sequentially provided with fixing pieces used for positioning two pieces of masking paper which are symmetrical left and right, two positioning pieces used for positioning the free ends of the masking paper and four idler wheels used for forming positioning gaps of the free ends of the masking paper from top to bottom. And the masking paper is rotatably connected with the fixing piece. The line drawing device is easy to manufacture, low in manufacturing cost, suitable for line drawing construction in various fields and worthy of wide popularization. 本实用新型提供一种便携式场地画线精准施工装置，包括支撑杆，所述支撑杆自上而下依次设有用于定位左右对称的两个美纹纸的固定件，及用于定位美纹纸自由端的两个定位件，及用于形成美纹纸自由端的定位缝隙的四个滚轮；美纹纸与所述固定件可转动连接。本实用新型制作简单，制作成本较低，可适用各类场地画线施工范畴，值得广泛推广。