Bulk CePd2Si2 has a anti-ferromagnetic transition at around 10 K. In the presence of external pressure, this anti-ferromagnetic transition temperature TN lowers with the increase in pressure. TN is oppressed to 0 K at roughly 3 GPa, and a superconducting transition appears when the pressure is increased to 2.4 GPa; the superconducting transition temperature Tc is around 0.3 K. However, when the external pressure exceeds 7 GPa the superconducting transition disappears. The goal of this research is to determine whether the nanoscale miniaturization of CePd2Si2 would, like bulk under external pressure, have the same oppression of TN and the same appearance of superconducting transition. We discovered that, for sample sizes of around 3~4 nm the anti-ferromagnetism disappears and paramagnetic behavior surfaces. Moreover, the effective magnetic moment drops to from the bulk 2.42μB to 1.67μB , which is around 69% that of bulk.