【Objective】To investigate the effects of 15-day continuously shading treatment after flowering on yield, quality and major aromatic compound 2-acetyl-1-pyrroline (2-AP).【Method】 Two conventional aromatic rice cultivars of Yuxiangyouzhan and Nongxiang18 were treated by 15-day continuously shading after flowering and natural light in the field. The yield，quality, 2-acetyl-1-pyrroline content and other indexes of aromatic rice were measured.【Result and conclusion】 The results showed that compared with natural light, the 15-day continuously shading treatment after flowering significantly increased the contents of 2-acetyl-1-pyrroline and protein in grains, and significantly decreased 1000-grain mass, seed setting rate and yield as well as head rice rate. Therefore,low-light stress plays a positive role in the aroma enhancement of aromatic rice but leads to a yield reduction. The effects of shading on other grain quality traits are different due to different varieties.