Wilson Cloud Room is a mobile, visual, and zero threshold nuclear physics demonstration system that magnifies the traditional Wilson Cloud Room to a "room level" size, allowing for real-time presentation of alpha, beta, gamma, and cosmic ray tracks in visible space. It is suitable for university nuclear physics experiments, science and technology exhibition halls, and science popularization bases. Panoramic Immersive: One experiment can accommodate 10 people for observation in the cabin at the same time; Single experiment consumption of alcohol ≤ 10 mL, dry ice ≤ 200 g. Application scenarios: Modern physics and nuclear physics experimental courses in universities; The theme exhibition of "Visible Cosmic Rays" at the Science and Technology Museum; Demonstration of STEM in Youth Study Camp.