The invention discloses a manufacturing method for an Ag-based electrical contact. By the utilization of a laser selective melting method, firstly, a laser of 4*105-10*105 W/m<2> is used for prefabricating an Ag2O transition layer of 20-50 micrometers on the surface of a contact bridge, and then a three-dimensional structure of the Ag-based electrical contact is printed on the surface of the transition layer. By means of prefabrication of the transition layer, introduction of oxygen in the forming process, reduction of the energy density of the laser and the like, the reaction temperature of the laser selective melting is decreased, losses caused by low-melting-point Ag evaporation are avoided, losses of Ag powder is reduced by 20-30% in the preparation method, and accordingly the production cost is reduced.