ZR1 hot dry rock well has the characteristics of high temperature, high hardness and high abrasiveness. Polysulfonate drilling fluid system was selected in the construction for its good keeping of rheology and low filtration under high temperature and high pressure. By the analysis on the factors such as formation lithology and petrophysical property, the cone bit suitable for the well drilling in high hardness and high abrasive formation was selected and 1.24m/h average ROP was obtained. Through the experiment and practice, the cementing technology of high temperature（130℃）was mastered, water sealing and cementing quality is qualified by inspection. By the use of Chuan 5-4 type coring apparatus, coring operations were successfully completed in the high temperature, high pressure, and the broken formation with core recovery of 45%～83%.