The springback of laser welded plate single point incremental forming is an important factor affecting the forming precision.The springback angle was used to measure the springback size of the sheet metal.The diameters of tool head diameter,forming height,lower pressure and half top angle were studied by orthogonal test design.The influence degree of each factor on springback was obtained.The factors affecting the springback of sheet metal are as follows:forming height,lower pressure,half top angle and tool head diameter.The diameter of tool head has little influence on the springback effect.The forming height has a significant influence on the springback effect,and the higher the forming height,the smaller the springback angle.In a certain range,the size of the springback angle depends on the size of the lower pressure,and the larger the lower pressure,the smaller the springback angle.Too large or too small half top angle can result in significant rebound.Suitable half top angle design can effectively reduce the appearance of rebound,thus ensuring the precision of forming.Finally,the optimal technological parameters obtained by orthogonal test were verified by experiments.