小颗粒物质在自然界广泛存在且在工业生产中具有重要应用，应用数字全息技术对其进行三维研究具有重要的科学意义及实用价值。系统地对数字颗粒全息技术及其应用进行了综述,具体包括基于光散射理论、衍射理论的颗粒全息图形成及其条纹特性，颗粒全息图的数字重建方法、颗粒识别、定位以及颗粒匹配，数字全息在颗粒场中测量颗粒粒径、三维位置、形貌和三维速度的应用。数字全息作为一种三维测量技术，在颗粒场测量中具有广阔的应用前景。

Small particles widely exist in nature, which are applied to various industrial productions. The three-dimensional (3D) characteristics of particles with digital holography play key roles in scientific researches and applications. Digital particle holography and its applications have been systematically surveyed. The formation of particle holography based on light scattering theories and diffraction theories and its fringe patterns are introduced. Holograms processing algorithms including numerical reconstruction, particle detecting, 3D position locating and particle pairing are presented. Typical applications of digital holography to particle field measurement including particle size, shape, 3D position and 3D velocity are demonstrated. Digital holography, as a 3D measurement tool, shows great potential in particle field characterization.