Abstract: Plant photosynthesis is the basis for the survival of the biological world. Leaves have traditionally been considered as the main organs for photosynthesis in plants. However, the photosynthetic contribution of non-leaf green organs shows great potential under adverse conditions. To explore new ways to improve plant production, researchers have recently turned their attention to non-leaf green organs in plants. In this review, the types and photosynthetic contributions of non-leaf green organs as well as photosynthetic measurement methods are introduced. The goal of comparing differences in non-leaf green organ photosynthetic contributions and measurement methods is to provide a reference for improving non-leaf green organ photosynthetic performance.