Abstract: In order to clarify the effects of salt stress on crop growth and corresponding monitoring techniques, crops in the saline region were taken as the research object in this paper, the influence of salt stress on crop morphology, physical properties, yield, and quality, and the common monitoring techniques, such as hyperspectral technology, unmanned aerial vehicle（UAV） monitoring technology and satellite remote sensing monitoring technology were reviewed. The problems existing in crop research in saline soil areas, such as the relative lack of saline-resistant crop varieties, the under-development of saline-alkali soil technology, the relatively single monitoring sensor, and the insufficient means of monitoring, were analyzed and the future development and application were prospected.