The invention belongs to the technical field of grouting, and particularly relates to an assembly type building sleeve grouting training device. The assembly type building sleeve grouting training device comprises a split block capable of being separated from a wall body and a grouting cylinder for pouring slurry; according to the grouting training device, the grouting cylinder is composed of twoparts of a first half cylinder and a second half cylinder; when the grouting effect is verified, the second half cylinder is taken down along with the split block to expose the grouting body for inspection; the test personnel can conveniently check the grouting effect, and the grouting technology of trained students is facilitated; in order to ensure that in the grouting work process, the first half cylinder and the second half cylinder can be tightly attached, a rubber pad and a tightening device are arranged on the second half cylinder; and therefore, by virtue of the rubber pad and the tightening device, when the split block is installed in a mounting groove in the wall body, the situation that particles adhered to the end face of the split block and on the inner end face of the mounting groove affect the fit of the first half cylinder and the second half cylinder, gaps occur, incidental bodies are formed on both sides of the grouting body formed by grouting, and the overall grouting effect is affected can be prevented.