The utility model discloses an analogue means for measuring single grade of conductor tensile force of transmission line changes, including the frame, place track on the frame in, lie in the track topthe fixed pulley, place in on the track and draw the rolling wire of running block along the rolling running block of track with through the fixed pulley, the track is including bent filiform left rail and right rail, the running block includes the connecting axle of pulley about left pulley, right pulley and connection, has hung the heavy object on the connecting axle, the utility model discloses can be according to factor changes such as wire model, wire shelves distances, will be in 100 -meter dash shorten to several meters in with the transmission line simulation of the distance that performs, guaranteeing under suspension string mechanics characteristic and the circumstances unanimous on former transmission line that tension change that can the corresponding transmission pressure ofaccurate effectual reflection guarantees accuracy and reliability that the transmission pressure designed to very big reduction the experimental degree of difficulty, empirical risk and experimentation cost.