The invention relates to an anchor rod pallet load visualization digital imaging method suitable for a non-contact measurement method of a stressed underground anchor rod. The anchor rod pallet load visualization digital imaging method specifically comprises the following steps: a plurality of images of a pallet before and after a deformation is shot using a CCD camera, space identification is performed on the multiple images of the pallet before and after the surface deformation through adoption of a digital speckle correlation technology, a three-dimensional coordinate is obtained through calculation, a three-dimensional model before and after the surface deformation of the pallet is established through fitting, and data before and after the surface deformation of the pallet are obtained; and a strain field is obtained through a rapid three-dimensional deformation analysis and comparison of the three-dimensional space data before and after the deformation of the pallet, a stress field is obtained through a combination with pallet bending rigidity, and a real-time load of an anchor rod can be obtained through integral back calculation of the stress field. Compared with a traditional strain foil, a traditional displacement sensor, a traditional anchor rod puller and a traditional hydraulic pillow, the anchor rod pallet load visualization digital imaging method is advantageous in that usage of a pallet load visualization digital imaging technology is simple and convenient, and three-dimensional deformation and strain measurement are achieved rapidly.