The invention provides a tunnel lining trolley concrete casting informatization monitoring system. The system includes a gate-shaped main steel frame, a limiting sensor, spring sheets, microswitches,a camera, a laser scanner, an operation table, a tablet computer, an end template and multiple module units; the module units are sequentially connected with one another to form an arc-shaped structure, casting areas are formed at the inner sides of the template units and the end template, multiple mounting holes are formed in the template units and internally provided with the spring sheets and the microswitches, an observation window is formed in the end template, the camera is arranged at the outer side of the observation window, and therefore monitoring of the casting areas is achieved; the limiting sensor is arranged at the end brim of the arch apex of a template; a supporting component is arranged on the gate-shape main steel frame, the laser scanner is arranged on the supporting component to achieve scanning of a lining surface, the casting amount of each part of concrete mortar is obtained through calculation of the tablet computer, and therefore quantitative casting is achieved.