Legumes are the second most consumed crop after cereals. The young plants (microgreens), and seeds are edible, because of their high content of proteins, carbohydrates, vitamins, fibers, and antioxidants. Nowadays, interest have been gained regarding the cultivation and consumption of legume microgreens (LMGs) owing to their nutritional and therapeutic properties. However, the production of LMGs faces various problems owing to their susceptibility to several environmental stresses. Traditionally, securing the productivity of LMGs has become difficult and therefore, in this context, nanotechnology has emerged as a great tool not only to boost the productivity but also to combat the abiotic and biotic stresses which retards the growth of LMGs. Several nanoparticles have been reported to improve the health of these plants by improving growth, physiology, and biochemical status. Additionally, it has been exhibited that the nanoparticles can be engineered and used as a carrier for the delivery of beneficial agrochemicals which can elevate the stress alleviating potential of the native nanoparticles. Moreover, it has been demonstrated that the nanoparticles can function by altering the phytohormone signaling, and key mechanisms at the molecular level to improve the crop health. Keeping all these aspects in consideration, this chapter provides an insight to the understanding of growth promoting and stress alleviating potential of the nanoparticles and also ventures in to the mechanism lying behind the efficiency of the nanoparticles for better production of LMGs.