<p>Based on the problem that the mechanical properties of GH4169 alloy after laser deposition are not up to standard due to the precipitation of many Laves phases, the effect of electric-pulsed current on the microstructure and tensile properties of GH4169 alloy after laser deposition is studied in this paper. The results show that under the combined action of Joule heat and electric field, the Laves phase dissolves continuously in the repaired GH4169 alloy after laser deposition, and the solubility increases with the increase of frequency, and the size and volume fraction of Laves phase decrease continuously. Compared with the non-electric pulsed current treatment, the tensile strength of GH4169 alloy repaired by laser deposition increased by 18%, 20% and 23%, and the yield strength increased by 10%, 24% and 32%, respectively, after 5, 10 and 20 min treatment with 40 Hz electric pulsed current, the mechanical properties of the alloy are also improved. This is because the electrical conductivity of the matrix is greater than that of the Laves phase, so that the Laves phase causes greater free energy increment. In order to achieve stability of the system, the Laves phase is dissolved first. Meanwhile, the Joule thermal effect strengthens the vibration capacity of each particle of the alloy and accelerates the long-range diffusion rate of solute atoms. The brittle Laves phase dissolution significantly improves the mechanical properties of the alloy. During the process of Laves phase dissolution, a large amount of Nb element was dissolved back into the matrix, and the γ″ phase began to precipitate under the action of electric pulsed current. With the extension of electrification time, the size of γ″ phase increased, and the pinning effect of γ″ relative to dislocation movement increased, making the dislocation movement more difficult to carry out, and the alloy strength increased significantly.</p>