The process parameters and microstructure of the laser forming repaired (LFR) samples of Inconel 625 alloy are investigated. The results show that a wide range of process parameters are suitable for the laser forming repairing of Inconel 625 alloy. The laser power mainly affects the width of single track LFR samples. The scanning velocity has significant effect on the size of single track LFR samples. The powder feeding rate has less effect on the size of single track LFR samples. The interface between the substrate and laser repaired zone (LRZ) shows a metallurgical bonding. The phases in substrate mainly consist of the γ(Ni-Cr) matrix, MC (NbC, TiC) carbids with bimodal sizes of about 10μm and 0.5μm, and laves phase. In the LRZ, columnar dendrites grow epitaxially from the substrate, approx following the deposition direction. The phases in LRZ mainly consist of γ matrix, laves phase and a small amount of MC carbids. Due to the increase of nucleation sites, a large ammount of laves phase are precipitated in the layer interface and track interface.