Abstract: Although National Ignition Campaign (NIC) has not achieved the milestone goal of ignition, National Ignition Facility (NIF) has established unprecedented ability of experimental physics on ignition, high energy density physics and basic science by integrating laser performance, target diagnostics and target fabrication. With extraordinary capabilities, NIF researchers have designed delicate experiments to clarify physical understanding and specified several issues which are crucial to the ignition physics. While in Research Center of Laser Fusion, hohlraum energetics and implosion hydrodynamics have been studied extensively on Shenguang-Ⅱ and Shenguang-Ⅲ prototype laser facilities in recent years. Physical experiments employ several high precision diagnostics in resolving different photon range and multiple viewing areas. These detailed and accurate data have improved our understanding of target physics, and help to validate our radiation-hydrodynamic code.