In order to improve the powder convergent characteristics of flow field of the inside-laser powder feeding nozzle in laser metal direct forming (LMDF) and obtain longger converging focal length, smaller converging diameter and divergence angle, the powder converging parameters are studied by experiments with different shielding gas pressure under unloading and carrier gas conditions. The experimental results indicate that the powder converging focal length increases, converging diameter and divergence angle decrease with the growth of shielding gas pressure under unloading conditions. The powder convergent characteristics gets better. The powder converging focal length firstly gets longger then gets shorter, converging diameter and divergence angle decrease with the shielding gas pressure increasing under carrier gas state. The effect is preferred when the shielding gas pressure is equal to the carrier gas pressure. It has an important guiding significance for process optimization during LMDF with the inside-laser powder feeding way.