In this study, 1500 Lohmann layings aging 34-weeks-old were randomly and equally divided into 3 treatment groups, and the control group was fed a basal diet and the experimental groups were fed the basal diet supplemented 300 mg/kg of GTA and 300 mg/kg PG, respectively. The pre-experimental period lasted for 1 week, and the experimental period lasted for 8 weeks. The results showed that compared with control, dietary GTA and PG had no significant effect on laying performance. GTA could significantly improve yolk color at the 8 weeks, but had no significant effects on protein height, Huagh unit and yolk ratio. The levels of TP, ALB, GLB and TC in the plasma of laying hens with GTA were significantly reduced, while the levels of GLU, TG, HDL-C and LDL-C were tended to decrease. PG could significantly decrease plasma TP and ALB levels, while the levels of GLU, TG and HDL-C were tended to decrease. GTA and PG had no significant effects on liver parameters(ALT, AST, ALP) and antioxidant parameters(SOD, GSH-Px, CAT and MDA) in laying hens. GTA significantly decreased the levels of IL-1, IL-6 and TNF-α, while PG increased the concentrations of serum IgY and IgM. To sum up, the addition of 300 mg/kg GTA and PG in the diet did not affect the egg production performance, however, GTA could improve the egg yolk coloration and reduce the levels of blood lipids, plasma proteins and serum inflammatory factors in laying hens more than PG, and PG could increase the body immunity.