Geothermal energy is a kind of renewable energy sources which is clean， safe， reliable and stable. LQDR-1 is a geothermal hot spring well with a design depth of 3500m and an actual drilling depth of 3201.2m. The geothermal reservoir is fracturing type， with a small designed target area， strong drilling pertinence and purpose， large dip angle and poor drillability. In the first and second well section， the LQDR-1 well adopts a drilling assembly of tapered + pendulum type in order to reduce the horizontal displacement at the bottom of the well and improve the hit rate. Through optimizing the drill collar string and drilling parameters， the entire well maintains a lower wellbore inclination and higher wellbore quality. In the third and fourth well section， the air-lifting reverse circulation drilling technology was used to drill into the geothermal reservoir， which can solve the problem of poor cutting carrying capacity in the annulus of large-diameter and multi opening geothermal wells， on the other hand， the damage to the reservoir can be avoided or reduced， the maximum water output capacity of the formation is maintained， and the water output of a single well is increased.