Disinfecting and killing security device and domestic robot

The utility model relates to the technical field of robots, and provides a sterilization and security device and a domestic robot, an ultraviolet sterilization and disinfection module is used for carrying out ultraviolet sterilization and disinfection treatment on an indoor environment, and a sound monitoring module is used for detecting sound in the indoor environment and generating a sound detection signal; the monitoring control module is connected with the sound monitoring module and is used for receiving the sound detection signal and generating a killing pause signal when the sound detection signal is greater than a preset pause sound threshold value; the disinfection driving module is connected with the ultraviolet disinfection module and the monitoring control module, and is used for controlling the ultraviolet disinfection module to start according to the received disinfection starting signal so as to carry out ultraviolet sterilization and disinfection treatment on the indoor environment, and contro