The snow making machine can make high quality snow under any of temperature and humidity. It is of low cost, low noise, available in any weather, safe, simple and small volume. It enjoys the advantages of sports & recreation, especially catering for the recreation or friend's party as well as commercial activities for citizen at weekend. The main structure of ski rink includes peripheral protective structure, indoor slope ramps, traction equipment, freezing equipment, snow-making system facilities, ski equipment, snow trimming facilities and snow sports facilities, etc.