Based on the mechanism of ablation, we study the quantitative removal of low thermal conductivity resin-based paint with high repetition rate pulse laser. The selection of scanning mode of a two-dimensional galvanometer system is studied, as well as the distribution characteristics of laser spots on material surface. The temperature change of material surface is simulated and it is found that the pulse interval has little influence on the material temperature change. The experiments of high repetition rate pulse laser ablating low thermal conductivity paint are carried out. The relation between the pulse number acting on paint surface and the ablation depth is linear, and a linear equation is established.