Abstract: As a new kind of repairing material for concrete buildings, acrylic emulsion slurry is widely used in the culvert sluice reinforcement of the Yellow River flood control project because of its excellent impermeability, tensile property and bonding ability. However, it is found that the material has cracks,cracks and other defects in use. By combining the laboratory test and field test, the main factors causing material cracking and cracking are analyzed, reasonable anti-cracking measures are researched, reasonable construction technology and various anti-cracking parameters are worked out.