Many elderly suffer from knee osteoarthritis and related degenerative diseases. However, due to limited medical resources and population ageing, patients have to wait for months for physiotherapy treatment in hospital. To provide elderly a safe, reliable and effective personalized physiotherapy, our team has developed an easy-to-use smart therapeutic device for prevention and treatment of knee joint degeneration diseases. By combining low-level laser therapy, heat therapy, massage and AI technology, the device is a promising solution to relieve pain, stimulate musculoskeletal and promote joint tissue regeneration.