A construction process of soil nailing wall for geological disaster control is provided, which uses a construction equipment of soil nailing wall for geological disaster control, including underframe, lifting assembly and etc.; a lifting assembly is installed on the left side of the upper side of the underframe. When in use, the disclosure can automatically cut off the tree trunks extending out of the slope surface, and then install the grouting rods in the soil slope holes. At the same time, the disclosure can adapt to the tree trunks with different bending degrees to cut them, which solves the problem of tree trunks interfering with the construction, greatly improves the efficiency, prevents the cut tree trunks from falling onto the slope, avoids damaging the slope surface, and can adapt to a variety of situations to cut off the tree trunks.