The invention relates to the electric power tool field and particularly relates to a detachable multifunctional electric-testable insulation rod. The detachable multifunctional electric-testable insulation rod comprises an operation head and a rod body, wherein the operation head is detachably arranged on the rod body, the rod body is internally provided with a parallel circuit, the parallel circuit comprises multiple lines, each line is respectively provided with an indication lamp, opening and closing of all the lines are controlled by an adjusting switch, and the rod body is further internally provided with a neon tube and an induction controller. Through the detachable multifunctional electric-testable insulation rod, work efficiency is improved, and work demands of lines having different voltage grades can be satisfied.