Tension and compression load sensor is a foil strain gauge with high precision which is attached to the elastomer in a certain way by using the principle of resistance strain. When the sensor by external force, through the external excitation voltage (bridge voltage), the size of the force can be converted into the corresponding electromotive force, so as to achieve the purpose of measurement. The sensor is used with force display instrument and other amplifiers, which can be widely used in force measurement and analysis, automatic detection and control in the production process, and as a testing element in various measuring devices.