Abstract: By using the atomic absorption spectrometry,determination was conducted on the content of Cadmium (Cd) in the soil and bark,leaf,green husk,shell and kernel of walnuts from Panzhihua-Xichang Regions' walnut producing areas in order to study the accumulation characteristics of cadmium (Cd) and consumption risk of the walnut.The results showed that the content of Cd in the soil was significantly higher than that in the organs of the walnut tree,and there were soil samples which exceeded the national standard; the content of Cd in the leaf samples was significantly higher than that in the walnut;with the increase of Cd content in the soil,the bark,leaf,green husk,shell,and kernel didnot show an obvious enrichment regularity,and the accumulation ability of the walnut's edible parts was weaker as compared with the other main organs;The results of the Nemerow Index Method showed that the comprehensive pollution index of Cd in the walnut was P<1,indicating the walnut samples of the experimental point in production bases of Panzhihua-Xichang regions were out of Cd pollution;Referring to China's current standards and the tree nut consumption amount of Chinese residents,it was calculated that the target risk factor about Cd in the walnut was much lower than 1.0 no matter for adults or kids,which meant that the content of heavy metal Cd in the edible parts of walnut was temporarily risk-free for Chinese consumers' health.However,from the overall situation,the locality soil and edible parts of walnut would still need strict a sampling examination to reduce the probability of product pollution and human health damage.