The invention discloses a sleeping quality auxiliary system based on a sound detecting technology. The sleeping quality auxiliary system comprises two sound sensors, a signal regulating circuit, a temperature sensor, a sleeping auxiliary unit and a core processor. The sound sensors are respectively placed at two ends of a pillow, and used for receiving snoring sound signals. The signal regulating circuit is connected with the sound sensors. The temperature sensor is used for detecting indoor temperature. The sleeping auxiliary unit is used for adjusting indoor temperature and ventilation rate to realize emergent alarming. The core processor is connected with the signal regulating circuit, the sleeping auxiliary unit and the temperature sensor, and is used for extracting and analyzing features of sound signals and controlling the sleeping auxiliary system unit. Sleeping quality is analyzed by collecting the snoring sound of a user; in an infrared remote controlling manner, an indoor air conditioner is controlled to adjust temperature; and in emergency, the system alerts immediately through a GSM (global system for mobile communications) module. The sleeping quality auxiliary system is low in energy consumption, low in cost, small in size, convenient and flexible to use; and plays a positive protection role in sleeping quality improvement and timely discovery and treatment of sudden diseases.