It focuses on the physical characteristics and living needs of the elderly, covering multiple aspects, and aims to create a safe, comfortable and convenient living environment for them.

I. Security Design

1. Anti-slip treatment: Elderly people are relatively slow-moving and have poor balance, making them prone to slips and falls that can lead to serious injuries. Areas prone to water stains, such as bathrooms, kitchens, and shower rooms, must have floors made of highly anti-slip materials, such as anti-slip tiles with a coefficient of friction of at least 0.6. Anti-slip mats can also be laid in shower areas and bathtubs to further enhance the anti-slip effect. The entire house floor should be kept level to minimize height differences. If this is unavoidable, a gentle slope should be installed at the junction of indoor and outdoor areas, with a slope not exceeding 1:12 and rounded edges to prevent tripping.

2. Safety Handrail Installation: Sturdy handrails must be installed in areas where elderly people can easily gain leverage, such as next to the toilet, in the shower area, and in hallways. Stainless steel or nylon is recommended for the handrails, as they should be able to withstand at least 150 kg of pulling force. The surface should be smooth without sharp edges to prevent scratches. The handrail height is generally 70-80 cm from the ground, but can be adjusted according to the height of the elderly person.

3. Emergency Call System Setup: Emergency call buttons should be installed in key locations such as the bedside in the bedroom and the bathroom, and connected to the children's mobile phones or the community service center. The buttons should be large and have a clear tactile feel, making it easy for the elderly to press for help in an emergency. The system should have clear voice prompts and a rapid response mechanism to ensure that the elderly receive timely assistance.

II. Convenience Design

1. Optimized Space Layout: Following the principle of separating active and quiet areas, bedrooms should be located away from noisy areas such as the living room and kitchen to ensure undisturbed rest for the elderly. Indoor passageways should be sufficiently wide, with a minimum clear width of 90 cm. Door widths should be appropriately widened to 80-90 cm to facilitate free movement for the elderly using wheelchairs or walking aids. Furniture should be arranged neatly and orderly, leaving ample space for movement and avoiding obstructions.

2. Reasonable Storage Design: The height of the wardrobe hanging rod should be moderate, generally 1.5-1.7 meters from the ground, making it easy for the elderly to hang and retrieve clothes. Multiple drawers can be installed under the wardrobe for convenient storage of small items. Kitchen cabinet design should consider the height of the elderly; the countertop height should be 75-85 cm, and a tiered design can be used, with the sink area slightly higher and the stove area slightly lower, conforming to ergonomics. Pull-out baskets and drawers should be installed inside the cabinets for easy access to pots and pans. Wall cabinets should not be too high; pull-down baskets can be used to reduce the burden on the elderly when reaching for items.

3. Application of Intelligent Products: Smart door locks offer multiple unlocking methods such as fingerprint, password, and card swipe, making it convenient for elderly people who forget their keys to enter their homes. Intelligent lighting systems can be set to switch on/off at set times or be remotely controlled, eliminating the need for the elderly to fumble for switches in the dark. Smart toilets feature heating, washing, and drying functions, enhancing user comfort. Smart home appliances such as robot vacuum cleaners and smart speakers help the elderly complete housework and access information more conveniently.

III. Comfort Design

1. Temperature and Ventilation: Good temperature and ventilation conditions are crucial for the health of the elderly. Installing air conditioning and a fresh air system is essential. Air conditioning should have precise temperature control and be easy to operate, while the fresh air system should ensure fresh indoor air. Windows should be designed for easy opening and closing by the elderly; casement or sliding windows are suitable, and the windowsill height should not be too high to allow for easy viewing outside.

2. Acoustic Design: To reduce external noise interference, windows are made of double or triple-glazed glass for effective sound insulation. Sound-absorbing materials, such as sound-absorbing wallpaper and carpets, can be used on walls and floors to reduce indoor echoes. Sealing strips should be installed on bedroom and living room doors to enhance sound insulation and create a quiet resting environment for the elderly.

3. Color and Material Selection: For colors, choose warm, soft tones such as beige, light blue, and light wood tones, avoiding overly glaring or cold colors. For materials, furniture surfaces should be smooth and free of burrs. Sofas and chairs should be made of soft, elastic fabrics to provide a comfortable sitting and lying experience. For flooring, choose wood flooring or soft tiles, which are comfortable underfoot and provide good cushioning in case of falls.

IV. Functional Design

1. A well-equipped bedroom: The bed height should be appropriate, generally 45-50 cm from the ground, to facilitate the elderly getting in and out of bed. The mattress should not be too soft and should provide sufficient support to protect the elderly's spinal health. Adjustable handrails should be installed beside the bed to help the elderly get up. A double-control switch should be installed at the head of the bed for the elderly to easily turn off the lights before going to sleep.

2. Bathroom Function Optimization: The toilet height should be 40-45 cm to make it easier for the elderly to get up. The sink height can be appropriately lowered to 80-85 cm according to the elderly's height, leaving space underneath for wheelchair users to approach easily. A foldable seat is provided in the shower area for the elderly to shower while seated. The bathroom adopts a dry and wet separation design to prevent the elderly from slipping.

3. A functional living room: Choose a sofa with good lumbar support and consider adding cushions to improve the comfort of elderly people sitting for extended periods. The coffee table should be of moderate height for easy placement of items. A display area can be set up in the living room to showcase photos, keepsakes, etc., enriching the elderly person's spiritual life.