A double-monocular white light three-dimensional measurement system used for restoring face defect of patients belongs to fields of optical measurement, mechanical engineering and medical engineering. The measurement system includes a left monocular measurement head, a right monocular measurement head, a measurement head support, a measurement head translation mechanism, a control cabinet and a computer. Based on structure optical projection three-dimensional vision measurement technique, the measurement system employs double-monocular measurement structure, white light sources which are safe for human body are employed in a left magic lantern projector and a right magic lantern projector for rear projection of physical coding grating, Gray codes and phase shift coding stripes are projected on left and right faces of patients, after a left camera and a right camera take a view of deformed gating images, measurement of complete three-dimensional face appearance of patients is realized by image decoding, triangle principle and double-eye measurement data combination. The measurement system can realize accurate data collection of natural state parenchyma of patient faces under non-contact condition and provide credible three-dimensional appearance original data of patient faces for clinic appearance defect restoring therapy.