"Space capsule housing" (commonly referred to as capsule hotels or space capsule apartments) is a highly compact and modular form of accommodation, inspired by the space capsules of spacecraft. The core objective is to provide a safe, private, and fully functional sleeping unit in the smallest space. It mainly serves specific groups who value efficiency, such as business travelers, backpackers, and young professionals.

• Maximum space utilization: Each cabin is designed to integrate sleeping, storage, lighting, and ventilation into a compact 2m x 1m x 1m internal space, often stacked 2-3 layers high.
• High modularization: Produced through industrial prefabrication using lightweight, high-strength composite panels for quick installation and maintenance.
• Privacy and security: Independent enclosed spaces with electronic locks and sound-insulating partitions.
• Integrated basic functions: Includes standardized mattresses, independent reading lamps, USB charging ports, and Wi-Fi connectivity.

The evolution of space capsules includes "Smart Capsules" incorporating voice control, environmental monitoring, and improved audio-visual systems. These units are being applied in diverse scenarios such as airport rest areas, office break rooms, and shared office complexes. Modern designs focus on eco-friendly materials and transparent visual effects to reduce the sense of oppression while maintaining a minimalist lifestyle experience.