Relay protection on-site work safety measurement tool

The present utility model discloses a relay protection on-site work safety measurement tool. The tool comprises an acrylic panel, and permanent magnets are fixed on two end heads of the acrylic panel. When the tool is in use, the permanent magnets are adopted to attract with an electric cabinet or other objects, the acrylic panel is buckled on a terminal row or a connecting sheet to realize isolation. A corresponding caution slogan is printed on the acrylic panel to prompt working personnel. Moreover, The caution slogan can be not printed on the acrylic panel, the caution slogan can be made into a board and arranged inside a groove body, thus when the working state needs to be changed, the way of replacing the slogan board of the groove body is ok. The use is very convenient, and repeated use can be realized.