The invention provides a test system device capable of performing engineering rock and earth mass grouting and roadway wall grouting under geological conditions of high ground pressure and high water pressure. The test system consists of a grouting pump, a pressure stabilization device, a water pressure increasing and stabilization system and a microcomputer acquisition and processing system, wherein the grouting pump and the pressure stabilization device are mainly used for supplying stable high-pressure slurry; a pressure sensor is used for monitoring pressure at a slurry outlet; the water pressure increasing and stabilization system is used for injecting water with certain pressure into a model pressurization device, so that pore water in a test sample can be pressurized under the action of the water pressure increasing and stabilization system, and a high-pressure environment of the test sample is guaranteed; the microcomputer acquisition and processing system can perform on-line monitoring and acquisition on test data in a pressure grouting system, the pressure increasing and stabilization system and the high-pressure grouting model device. The test system has the characteristics of steady pressurization, low noise, low pollution and the like; due to computer control, the test and control precision is high, and the operation is convenient.