The invention provides a technology method for conducting plasma surface texturing heat treatment strengthening on the surface of a workpiece. Through control over the scanning speed of an arc plasmabeam, the area, where heat treatment strengthening is not needed, of the surface of the workpiece has high scanning speed, the area needing to be subjected to heat treatment strengthening has low scanning speed, and workpiece surface texturing heat treatment is achieved. The method comprises the following steps that firstly, technology parameters needed for surface texturing heat treatment strengthening are determined; secondly, the workpiece position is fixed; thirdly, the initial position of an arc plasma generator is set; fourthly, the position and speed control procedure of the arc plasmagenerator is compiled; fifthly, the arc plasma generator is started and debugged; and sixthly, the compiled procedure is called, and an automatic running button is started.