The invention discloses a hot water drill system for ice drilling. The hot water drill system comprises a hot water drill device, and also an automatic control device. The hot water drill device comprises a nozzle, a drilling tool, a high-pressure hose, a mast, an electric winch, a high-pressure heater, a high-pressure pump, and a water tank, wherein a crown pulley is arranged at the top end of the mast. The automatic control device comprises a servomotor, a weighing sensor, an encoder, a borehole parameter observation instrument, and a controller. The weighing sensor, the encoder, and the drilling parameter observation instrument are connected to the controller. The servomotor is controlled by the controller. The servomotor is mounted in the electric winch, and can adjust the operating condition of the electric winch based on an instruction from the controller. Automatic control on drilling tool lowering speed is achieved, and borehole deformation can be prevented without causing serious borehole inclination accidents. The automatic control device can obtain various drilling parameters in real time, and adjust the drilling speed based on the obtained drilling parameters to help the hot water drill system to achieve the maximum drilling efficiency.