The invention belongs to the technical field of construction mechanical devices, and particularly relates to a coating stirring and blending device for construction. The following scheme is provided aiming at the problems that an existing coating stirring and blending device is inconvenient to add coating quantitatively, and thus coating is liable to be wasted, the coating stirring and blending device comprises a base, universal wheels are fixed to the four corners of the bottom of the base through screws, a shell is fixed to the inner wall of one side of the base through a screw, a measuringbox and a water tank are fixed to the two sides of the outer wall of the top of the shell through screws respectively, a raw material box is fixed to the outer wall of the top of the measuring box through a screw, a fixing plate is fixed to the bottom of the inner wall of one side of the shell through a screw, and a sealing box is fixed to the outer wall of the bottom of the fixing plate through ascrew. The coating stirring and blending device for construction can achieve quantitative adding of raw materials according to the coating area, is beneficial for improving the effective utilizationrate of the raw materials, beneficial for changing the phenomenon that precipitation is generated at the bottom of the shell and improving the blending and stirring effect, is beneficial for increasing the dissolution rate of pigment, and is beneficial for enhancing the blending efficiency.