镉主要蓄积于肝、肾。镉毒性出现前,体内蓄积的镉由尿、粪排出很少。但肾、肝损伤后,每日尿镉排出量明显增加。在镉损伤肾以前,粪便是镉排出的主要途径,但肾、肝都受损后粪镉排出规律尚不十分明了。本文研究大 Cadmium mainly accumulates in liver and kidney. Cadmium toxicity occurs before the accumulation of cadmium in the body by urine, excretion very little. However, kidney and liver injury, urinary cadmium excretion increased significantly. Excretion of cadmium is the main route of cadmium excretion before cadmium can damage the kidneys. However, the excretion of excrement of cadmium and cadmium after kidney and liver damage is not yet clearly understood. This article studies big