The principal Buddha image in the Ubosot of Wat Chamadevi is a large statue in the Subduing Mara posture, showcasing beautiful Lanna-style artistic features. It is enshrined on an intricately decorated gilded pedestal within the ordination hall, which was restored under the leadership of Kruba Srivichai in 1936. Notably, a "Life-sized Statue of Kruba Srivichai" is placed in front of the main Buddha image for devotees to pay respects to the Great Saint of Lanna. The interior is further adorned with murals depicting the life of Queen Chamadevi and the Buddha's biography, creating a serene and sacred atmosphere.