The computer-controlled electro-hydraulic servo horizontal tensile testing machine is a kind of special high-precision testing equipment that is suitable for the tensile test, break test, cyclic test, proof load, elongation measurement of the chain, rope, steel wire rope, and electric fittings. The equipment can realize automatic operation, and the test can be completed automatically by computer software. The equipment uses a load sensor and spherical centering device and then consists of a thrust cylinder, frame, lifting platform, etc. The equipment is driven by a special power hydraulic source, electro-hydraulic servo control technology, computer data acquisition, and processing, which can realize full-automatic closed-loop control. The equipment is composed of test host, oil source system (hydraulic power source), measurement and control system, electrical system, etc.