The Co2 rock breaking system is a new type of rock breaking equipment replacing explosive blasting. There is no vibration, shock wave, open flame, or harmful gas during the process of using Co2 rock breaking system. It is very safe and convenient. Most importantly, it is reusable, which significantly reduces construction cost. The emergence of Co2 rock breaking system perfectly solves the problems that blasting in mines and rock excavation is prohibited and that hydraulic breakers are low-efficiency. It has been widely used in mining, quarrying, highway construction, foundation construction, tunnel excavation and other fields.