The invention discloses a stress-strain test system of an intelligent ammeter automation calibrating device pressing connecting terminal. The system comprises a data collecting system, a displacement collecting module, a voltage collecting module and a power supply module. The displacement collecting module is used for monitoring compressed displacement of a spring, and voltage signals of compressed displacement are output to the voltage collecting module which receives the voltage signals transmitted by a displacement sensor and transmits the voltage signals to the data collecting system. The data collecting system receives the compressed displacement voltage signals transmitted by the voltage collecting module and demodulates the compressed displacement voltage signals into spring output displacement, then spring positive pressure, the stress and strain of the pressing connecting terminal are computed, and computing results are displayed through an upper computer interface. According to the system, the spring positive pressure, the terminal maximum stress and the strain magnitude of the pressing connecting terminal under the monitoring working state can be obtained, and help is provided for pressing connecting terminal working state judging.