Construction treatment method for building cracks

The invention discloses a construction treatment method for building cracks. The construction treatment method comprises the steps that on-site crack checking and locating are conducted; a U-shaped groove is dug; rapid hardening micro expanding cement is adopted for sealing the U-shaped groove, and a grouting channel is formed in the bottom of the U-shaped groove; water feeding and gas tests are conducted; preliminary grouting and secondary grouting are conducted; surface dressing is conducted; and an epoxy emulsion mortar waterproof enhancement layer is made, and water is sprayed for wetting and maintenance. The construction treatment method has the beneficial effects that the construction technology is simple and easy to achieve, the construction is fast, the construction period is short, environmental protection and energy saving are achieved, the labor intensity of workers is small, the construction comprehensive cost is low, and the application range is wide.