The invention relates to an anchor sprayed concrete grout-preventing wall construction method. The anchor sprayed concrete grout-preventing wall construction method comprises the steps that S1, a first layer of concrete is sprayed preliminarily on a tunnel face of a section needing to be subjected to curtain grouting; S2, full-length sticking type anchor rods are constructed on the first concretelayer and additionally provided with cushion plates, and the cushion plates are tightened through nuts and are closely attached to the outer surface of the first concrete layer; S3, a first-layer netpiece is hung on the outer surface of the first concrete layer and welded to the outer ends of the anchor rods in a spot welding mode; S4, a second layer of concrete is sprayed on the exterior of thefirst concrete layer; S5, a third layer of concrete is sprayed on the exterior of the second concrete layer; S6, a second-layer net piece is constructed on the outer surface of the third concrete layer; and S7, a fourth layer of concrete is sprayed on the exterior of the third concrete layer till the required thickness of a grout-preventing wall is reached, and after strength meets the requirement, curtain grouting construction can be conducted. According to the grout-preventing wall construction method, a formwork is not needed, the process is simple, the construction speed is high, the formed grout-preventing wall is reliable, effective and good in integrity.