The invention discloses a strain-gauge connecting fixing device for a test-piece elasticity modulus test. Multiple wiring terminals are fixedly arranged at fixed positions of a collet, and the signaloutput ends of all wiring terminals are connected with the signal input ends of external testers through wires. According to the strain-gauge connecting fixing device for the test-piece elasticity modulus test, a connecting mode adopts pressure-embedded wires, and compared with welding wires, the pressure-embedded wires are simpler and more convenient and capable of saving more time, and connection can be completed in one minute; the problem that the wires are arranged disorderly and pull strain gauges is completely solved; 8 wires are fixedly arranged in pairs, and convenience is provided forfinishing of later instrument-test output numerical values. Connection operation time is greatly shortened, the strain gauges can be connected with the wires only by pressing buckles through one step, the whole process can be completed in one minute, and testers do not need the welding technology and can complete the whole process. The problem that mutual interference exists between the strain gauges and the connecting wires is solved, and it is avoided that due to the dead-weight problem of the wires, the test process is interfered, and the strain gauges are pulled bad. According to the strain-gauge connecting fixing device for the test-piece elasticity modulus test, it can be completely guaranteed that the test process is not influenced by external factors.