Abstract: The characteristics of ions emission from laser -produced plasma in hohlraum is presented here. It differs obiviously from two - temperature electron velocity distribution observed in laser -planar target interaction, and presents a multi - temperature electron velocity distribution. This phenomenon reflects the evolution of plasma state in a hohlraum target. Furthermore, experimental results have shown that the DT fuel pellet placed in the hohlraum is probably bombarded by the fast ions in the explosion experiments.