The invention discloses an electro-hydraulic control system of a high/low temperature test stand of an automobile automation transmission valve body. The system comprises: an electric control system and a high/low-temperature hydraulic system. The electric control system comprises: an upper computer, a lower computer, an input/output module and a transmission control unit (TCU) controller. The input/output module and the TCU controller are connected with the lower computer as a dual redundant control mode. The valve body to be detected is directly controlled by a dual redundant control system. The high/low-temperature hydraulic system comprises an independently controlled high-temperature hydraulic circuit and a low-temperature hydraulic circuit, a high/low-temperature shared circuit which is connected with the high-temperature hydraulic circuit and the low-temperature hydraulic circuit and a detected hydraulic system which is connected with the high/low-temperature shared circuit. The detected valve body is arranged in the detected hydraulic system. In the invention, hierarchical control formed by the upper computer, a lower real-time controller and real-time interface control are adopted; through a CAN communication and signal interface module and a dual redundant valve plate control scheme which is connected with the TCU, a requirement of high speed data acquisition and test in the valve body test under the condition of the high/low temperature and operation parameter simulation can be satisfied.