A handheld large-scale three-dimensional measurement scanner system with photogrammetric and three-dimensional scanning functions, comprising: two cameras (101, 102) at fixed positions; at least one pattern projector; a photogrammetric module; and a three-dimensional scanning module, wherein one of the two cameras (101, 102) is a multipurpose camera that performs photogrammetry and three-dimensional scanning and the other is a single-purpose camera that performs three-dimensional scanning, wherein the photogrammetric module is configured to perform, by operating the multipurpose camera, global photogrammetry on a measured object and obtain three-dimensional coordinates of markers on a surface of the object, and wherein the three-dimensional scanning module is configured to perform, by operating the two cameras (101, 102) and the pattern projector, three-dimensional scanning on the measured object by using the obtained markers as global positioning information of the measured object, and obtain three-dimensional contour data of the surface of the object, wherein the photogrammetric module and the three-dimensional scanning module illuminate the markers disposed on or adhered to the surface of the object by providing, from supplemental light sources with two different wavebands, supplemental lighting on the surface of the measured object, wherein the photogrammetric module provides supplemental lighting on the measured object from a supplemental light source with a first waveband, and the three-dimensional scanning module provides supplemental lighting on the measured object from a supplemental light source with a second waveband, wherein the multipurpose camera uses a dual-waveband filter to filter out light outside the first waveband and the second waveband, and the single-purpose camera uses a single-waveband filter to filter out light outside the second waveband, wherein the pattern projector projects a pattern on the surface of the measured object in the second waveband, wherein the multipurpose camera uses a relatively high default resolution when the photogrammetric module operates, and wherein the multipurpose camera uses a relatively low resolution identical or similar to that used by the single-purpose camera when the three-dimensional scanning module operates. two cameras (101, 102) at fixed positions; at least one pattern projector; a photogrammetric module; and a three-dimensional scanning module, wherein one of the two cameras (101, 102) is a multipurpose camera that performs photogrammetry and three-dimensional scanning and the other is a single-purpose camera that performs three-dimensional scanning, wherein the photogrammetric module is configured to perform, by operating the multipurpose camera, global photogrammetry on a measured object and obtain three-dimensional coordinates of markers on a surface of the object, and wherein the three-dimensional scanning module is configured to perform, by operating the two cameras (101, 102) and the pattern projector, three-dimensional scanning on the measured object by using the obtained markers as global positioning information of the measured object, and obtain three-dimensional contour data of the surface of the object, wherein the photogrammetric module and the three-dimensional scanning module illuminate the markers disposed on or adhered to the surface of the object by providing, from supplemental light sources with two different wavebands, supplemental lighting on the surface of the measured object, wherein the photogrammetric module provides supplemental lighting on the measured object from a supplemental light source with a first waveband, and the three-dimensional scanning module provides supplemental lighting on the measured object from a supplemental light source with a second waveband, wherein the multipurpose camera uses a dual-waveband filter to filter out light outside the first waveband and the second waveband, and the single-purpose camera uses a single-waveband filter to filter out light outside the second waveband, wherein the pattern projector projects a pattern on the surface of the measured object in the second waveband, wherein the multipurpose camera uses a relatively high default resolution when the photogrammetric module operates, and wherein the multipurpose camera uses a relatively low resolution identical or similar to that used by the single-purpose camera when the three-dimensional scanning module operates.