The invention discloses a face recognition method for field operation and construction management. The face recognition method comprises the steps of first, constructing an over-complete dictionary psi=[(psi)1,..., (psi)i,..., (psi)k] according to face training samples; second, sequentially arranging test images into a column vector x; third, designing a measurement matrix Phi according to the over-complete dictionary psi; fourth, projecting the column vector x under the measurement matrix Phi to obtain a measurement vector y, and solving {alpha^i}; fifth, substituting the solved {alpha^i} into a formula (4.6) shown in the description so as to solve a judgment result of the input test sample. The face recognition method achieves face recognition for the field operation and construction personnel and the management personnel, performs projection through the measurement matrix on the one hand so as to enable the transmitted and calculated data to be reduced, improve the calculation efficiency and reduce the storage consumption, and can improve the accuracy and the efficiency of face recognition under a complex environment on the other hand.