Based on needs of repairing damaged TA19 titanium blisk of aero engine, a study focusing on laser forming repair process has been performed.TA19 powder prepared by plasma rotating electrode process, was used for laser forming, the samples were fabricated by laser forming in argon chamber. Both laser forming repair samples grown on base material and laser direct deposition samples were prepared. The microstructure, microhardness, tensile and fatigue strength of laser forming repair samples were investigated, and compared with base material and laser direct deposition samples. It is found that the sample fabricated by laser forming repair consists of laser repaired zone(RZ), heat affected zone(HAZ), and base material, laser repaired zone is metallurgical bonded with base material, coarse columnar grains in repair zone which grows parallel to deposition direction, an acicular αphase is formed inβgrains during rapid cooling stage which is known as widmanstatten structure. The microhardness of laser forming repair zone is 400 HV, which is 70 HV higher than that of base material. The average ultimate tensile strength and yield strength of laser forming repair samples were 999 MPa, 910 MPa respectively, which are basically equal to that of base material. The average elongation of laser forming repair samplesis 12.5%, which is reduced by 17% compared with base material. When the stress concentration factor Kt=3, the rotating bending fatigue strength of laser forming repair samples is 137 MPa at room temperature and 145 MPa at 450 ℃, which is comparable or slightly higher than that of base material. Laser forming repair process is a feasible approach for TA19 titanium blisk damage repair.