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The fringe projection technology is widely used in 3D measurement fields.However when the technology is applying to translucent objects,the subsurface scattering and absorbing always leads to a decline of the measurement accuracy.The aim of this paper is to propose a dual-direction fringe projection method in order to obtain a more accurate measurement result for the translucent objects as while as change the whole measurement system little and do not reduce the measuring rapidity.The paper mainly includes three parts:(1)The principle of dual-direction fringe projection method and different forms of dual-direction fringe;(2)Analysis of the different effect for the measurement accuracy brought by different factors;(3)Experiments for artificial tooth by various dual-direction fringes and accuracy analysis.The experiment results showed that by this method it is possible to improve the measurement accuracy for the translucent objects.