[en] Supercritical CO₂ has the characteristics of low viscosity, high diffusion and zero surface tension, and it is considered as a new fluid for non-polluting and non-aqueous fracturing which can be used for shale gas development. Fracturing refers to a method of utilizing the high-pressure fluid to generate fractures in the rock formation so as to improve the oil and gas flow conditions and increase the oil and gas production. In this article, a new type of experimental system for supercritical CO₂ fracturing under confining pressure conditions is designed, which is based on characteristics of supercritical CO₂, shale reservoir and down-hole environment. The experimental system consists of three sub-systems, including supercritical CO₂ generation system, supercritical CO₂ fracturing system and data analysis system. It can be used to simulate supercritical CO₂ fracturing under geo-stress conditions, thus to study the rock initiation pressure, the formation of the rock fractures, fractured surface morphology and so on. The experimental system has successfully carried out a series of supercritical CO₂ fracturing experiments. The experimental results confirm the feasibility of the experimental system and the high efficiency of supercritical CO₂ in fracturing tight rocks.