As an intelligent life assistant, robotic dogs play multiple roles in daily life: in home scenes, they can independently clean, patrol security (such as detecting gas leaks), and accompany children in learning and interaction; Public places undertake disinfection and inspection tasks, replacing manual entry into hazardous areas; Search and rescue deep into the ruins during disaster relief, and transmit real-time data. Its flexible quadruped design adapts to complex terrain, AI interaction capability enhances service accuracy, and combined with the Internet of Things, it can be linked to smart homes. Robot dogs not only improve life efficiency and safety, but also promote the development of service robots towards emotionalization and multifunctionality, and may expand to fields such as medical accompaniment and guidance in the future.