The heat treatment of laser near net shaping two kinds of nickel-based superalloy was carried out，and the influence of heat treatment parameters to the alloy’s property was analyzed. The analysis of results indicates that: the room temperature strength of Inconel 625 superalloy doesn’t improve obviously under the stress relieving heat treatment，nevertheless after the solution treatment is done over 1000 ℃，the room temperature tensile strength decreases. The tensile strength after 1100 ℃ heat treatment increases obviously compared with the deposited condition. The room temperature strength of Hastelloy C-276 doesn’t improve obviously under the stress relieving heat treatment. The room temperature tensile strength of laser near net shaping Hastelloy C-276 superalloy decreases with the temperature rising, when the heat treatment is done over 1000 ℃. Compared with the deposited condition, the tensile strength after 1150 ℃ heat treatment increases obviously. The fracture mode of the two kinds of laser near net shaping nickel-based superalloy is ductile fracture.