The residual stress of Ti-6Al-4V alloys by laser solid forming was measured adopting the standard strain gauge technique involving hole drilling method. Sample treatments were divided into three conditions, that is as deposited, annealing and solution aging treatment. The results indicate that the residual stress exhibits the similar distribution along the laser scanning direction (σY) and normal to the scanning direction (σZ). At the location of laser starting scanning, the stress is lower. The largest stress is the compressive stress at the center position and transformed to the highest tensile stress at the location of ending of laser scanning. It can also be found that the residual stress exhibits bigger compressive stress near the substrate, and with increasing of the cladding layer, it develops to lower tensile stress at the top of sample. After annealing treatment, the stress decreases averagely σY for 59.8% and σZ for 72.3%, respectively. After treating by solution aging, the stress decreases averagely σY for 64.7% and σZ for 67.8%, respectively. Heat treatment was found to relieve and adjust the residual stresses of laser solid forming Ti-6Al-4V alloy effectively