Abstract: The paper aims to study the physiological and biochemical responses of Bermudagrass under waterflooding, cadmium stress and the above two conditions at the same time. With wild Bermudagrass as the study material, the authors adopted the pot simulation method and designed 8 different treatments. The results showed that: to some extent, water-flooding promoted the growth of rhizomes and leaves of Bermudagrass and the increase of the anti- oxidant enzymes activity as well as the absorption of Cd2 + , meanwhile, it also suppressed the growth of roots and synthesis of chlorophyll; with increasing cadmium concentration, it could aggravate the degree of the membrane lipid peroxidation and stimulate the increase of the anti- oxidant enzymes activity in order to reduce the harm caused by adversity, and 3 enzymes (POD, SOD and CAT) displayed different expressions under different Cd2 + concentrations; the cadmium absorption abilities of different parts of Bermudagrass were leaves＞roots＞stems, and Bermudagrass had a cadmium tolerance threshold of 150 mg/L with an enrichment coefficient greater than 1 and transport coefficient greater than 0.5. Bermudagrass can grow normally within the threshold of cadmium stress-induced harm and is considered as a good species for revegetation in the regions suffered from both water-flooding and heavy metal pollution.