Brassica rapa, an integral species within the Brassicaceae family, is extensively cultivated for its consumable roots, foliage, and oilseeds. Nevertheless, its growth and overall productivity are markedly impeded by a variety of abiotic stressors, such as drought, salinity, and extreme temperature fluctuations. These environmental adversities disrupt physiological, biochemical, and molecular mechanisms, consequently impacting both crop yield and quality. This chapter presents a thorough examination of the underlying mechanisms that contribute to abiotic stress tolerance in B. rapa, with a particular focus on physiological responses, molecular adaptations, and genetic regulation. The significance of agronomic practices, including irrigation management, soil amendments, and the utilization of plant growth-promoting rhizobacteria, is also addressed as vital strategies for the mitigation of stress effect. Moreover, advancements in traditional breeding methods, marker-assisted selection (MAS), and innovative genetic engineering techniques such as CRISPR/Cas9 genome editing are discussed to underscore their potential in the development of stress-resilient cultivars. By synergistically combining biotechnological advancements with sustainable agronomic practices, future research endeavors can augment the resilience of B. rapa to climate change, thereby ensuring consistent crop production.