In research we studied the effect of vitamin C on the level of total cholesterol ،triglycerides ، (HDL) and (LDL) in the stressful rabbits blood by hydrogen peroxide (H2O2) . We used 30 rabbits were divided into three groups:First groupnot stressed (control group) ، Second group (Group stressed by H2O2) left without treatment until the end of the experimental period ، third group (Group stressful by hydrogen peroxide) was given orally vitamin C solution at a rate of 100 mg / kg of body weight per a day for five weeks.