Device for preventing tree root protrusions in municipal garden

A device for preventing tree roots from protruding in a municipal garden comprises a first boss, a second boss, a bracket and a mounting sleeve. The outer side edges of the first boss and the second boss are gradually inclined from top to bottom, and the first boss and the second boss are arranged in an attached mode; a first mounting groove is formed in the first boss, and a first mounting bin isarranged at the bottom of the first boss; a second mounting groove corresponding to the first mounting groove is formed in the second boss, and a second mounting bin is arranged at the bottom of thesecond boss; the two brackets are of a frame structure and are provided with exposure channels, a third mounting bin is arranged at the top of each bracket, and the two brackets are symmetrically arranged and are connected with the first boss and the second boss respectively; the mounting sleeve is placed in a space formed by the first mounting bin, the second mounting bin and the third mounting bin, and the mounting sleev