The utility model discloses a tunnel lining vault belt mould grouting device, including the car body, pulp preparation mechanism, grouting mechanism, the car body horizontal setting, pulp preparation mechanism includes storage subassembly, mixing subassembly, first stirring subassembly, second stirring subassembly, variable speed component, the storage subassembly is located at the right side of car body top, and its lateral wall is fixedly connected with the car body, the mixing subassembly is located above storage subassembly, and its lateral wall is fixedly connected with storage subassembly, and the bottom surface is open with storage subassembly, first stirring subassembly is located in storage subassembly, second stirring subassembly is located in mixing subassembly, and its top is connected with first stirring subassembly through variable speed component, and grouting mechanism is located at the left side of car body top, and is connected with mixing subassembly pipeline, the utility model discloses can realize the quick pulp preparation of while, avoids the influence to the
slurry performance of storage.