The embodiment of the invention discloses a hole wall guniting device, which comprises a main body pipe wall and a closing head. A cavity is formed in the main body pipe wall, and one end of the mainbody pipe wall is used for communicating with a grouting device so as to grout the cavity; the closing head is used for being connected with the other end of the main body pipe wall so as to close theother side of the cavity; a guniting seam penetrating through the main body pipe wall is formed in the main body pipe wall; and through the guniting seam, an annular mortar layer with a certain thickness is formed for hole wall guniting, thus a rock stratum is fixed, and a closed environment is provided for later anchoring grouting. Mortar sprayed out from the guniting seam is directly attached to the rock stratum, and fixes the rock stratum after being solidified, rock stratum holes of the whole anchoring section part do not need to be filled, thus the using amount of the mortar is decreased, the requirements for geological conditions are lowered, and the construction cost is further lowered while the construction period is shortened.