Monitoring and automatic control of technological parameters in the grout process with computer and processing of a large amount of data after completing grout work are important to rais technical level of grouting. In the eurtain grout project at Tonglushan mine computer technology was used, monitoring and automatical control of grout technology parameters were realized, along with automation and imagery of all the data processing. The control system, which consists of a 8031 monolithic processor and various interface circuits, has a powerful capability against interference and functions normally under strong interference in the field.