Abstract: The laser remanufacture is very important in the life-prolong of equipments. and the deformation caused by the course was small, discrete and non-linear. The deformation could affect the operating performance seriously, but meannhite it was hard to be measured accurately, which affected the process optimization and the forming evaluation. Aiming at this, the blade simulator was taken as target to realize its laser remanufacture, the point cloud data of the simulator surface by reverse engineering was taken for granted, the deformation law before and after remanufacture for the whole surface, the heat-affected zone and the vertical section was analyzed. The result shows that, the deformation of the whole simulator was relatively small, the dimensional change range was 0.20-0.50 mm and the heat-affect zone was the most concentrate zone. The deformation of the heat-affected zone taken on the characteristic of uniform distribution, the range was 0.44-0.55 mm. The dimensional change of the vertical section was between -0.20-0.20 mm and it takes on the characteristic of micro-deformation bending.