The invention is a kind of mechanical measuring sensor, which is used mainly in the testing piece of mechanism production and mechanism parts, measures the instant bearing torsion moment, pulling force and pressure. The character lies in: the elastic component is made up of the inner shaft and the outer shaft, the two shafts are nested. There has a pushing force bearing between the inner shaft and the outer shaft. The effect of the pushing bearing is: one shaft is used to bear the torsion moment transmission; the other shaft is used to bear load transmission. The invention attaches torsion moment resistance strain pieces and load resistance strain pieces on the two shafts. The force acted on the pieces are single, the output signal doesn't affects each other. It overcomes the deficiency of influence of the two pieces each other.