Doxorubicin (Adriamycin) is one of the chemical drugs commonly used worldwide for the treatment of various types of cancer , and high doses of it cause unwanted toxic side effects on the kidney. This study aims to demonstrate the physiological and histopathological effect of the doxorubicin drug on kidney of rats. For this purpose , twenty adults male were used in this study and were divided equally into four groups (A: control group, B: a group treated with the carcinogen only , C: a group treated with the carcinogen and doxorubicin and D: a group treated with doxorubicin only). Five rats were included in each group and the cancer was developed by injection with azoxymethane once a week for the B and C groups. Compared to the other groups, there was a significant decrease in the weights of animals for the carcinogen-treated group. The concentrations of the hematological parameters of the groups, such as Hb, PCV as well as some tests related to the kidney functions like the concentration of urea , uric acid ,albumin ,globulin, creatinine and total protein were measured and it was found differences between these three groups in term of these testes compared with control group. Regarding to the histological examination of the kidney present study showed specific tissue changes in the treated-carcinogen groups , such as lymphocytes infiltration , glomeruli condense , destroyed of urinary tubules in addition to the presence of bleeding. As for the group treated with doxorubicin , pathological changes were observed include, destroyed of glomerular basement membrane , glomeruli and urinary tubules.