Rhizoma Chuanxiong Hort is one of the main genuine medicinal materials in China, beginning contained in Sheng Nong’s herbal classic.which is the dry root that ranked for umbrelliferae plant,and have the effect of promoting blood and qi.also eliminating wind and reliving pain,which canbeused in chest fiank for the sting and fall. flapping haq menstruation, amenorrhea dysmenorrhea, remove lump abdominal pain, headache. rheumatism bi-complex pain.and so on. The heavy metal in Rhizoma Chuanxiong Hort have seriously affect the earning foreign exchange through export.and which was the most important key factor lead that could not sell in all over the world.At present.the studies of what were the reasons of Cd was overproof in Rhizoma Chuanxiong Hort were very less.so the study of that is very important. This article analyze the origin and way.and resolve that throngh detect Cd content in Rhizoma Chuanxiong Hort which from Xudu village and Aoping town.The result of Cd content study in Rhizoma Chuanxiong Hort is very useful for reference value.First.we had a field survey and sample collecting at Xudu village and Aoping town in May 2008,which got 75 batches of Rhizoma Chuanxiong Hort and 75 batches of soil corresponding.We got 7 batches of Rhizoma Chuanxiong Hort and 10 batches of soil corresponding in 2009 by GPS.(Because the peasant’ land was used for others,so we could not get the rest of 3 batches of soil)Then the content of heavy metal in Rhizoma Chuanxiong Hort and soil were detected,and we had the reliable data, we also drawed a conclusion throngh field survey and scientific data.During that time.we optimized the methods of sample’s handling and detection,which was better for making sure the conclusion.The study showed that the main reason of heavy metal was out of limits in State Medicinal plants Standard in our country was the heavy metal content was very high in cultivation soil.especially the conten of Cd.The bad background lead the bad result.Meanwhile, combining the on-the-spot investigation.we found that farmers’ cultivation patterns could also impact the heavy metal content clearly. but because it was controllable and tThere were laws to abide by,so can settle the poblem of heavy metal was overproof in Rhizoma Chuanxiona Hort.