Green lasers having a compact structure, high efficiency, and stable performance are widely used in optical storage, laser printing, stage performance, medical treatment, and underwater communication, particularly in laser displays. All-solid-state lasers based on frequency doubling technology are currently the most effective means of generating green lasers because of the lack of efficient semiconductor lasers having the corresponding output spectrum. With the developed technology of a periodically poled crystal, green lasers based on quasi-phase-matched intracavity frequency doubling in PPMgLN have been rapidly developed in recent years. Hence, this study reviews the multiple structures, performance advantages, and development status of green lasers based on PPMgLN.