System and method for testing biological effect of water under supercritical CO 2 phase change pulse

The invention discloses a system for testing the biological effect of water under supercritical CO 2 phase change pulse. The system comprises a fracturing pipe and a data acquisition device, wherein the fracturing pipe is arranged in a rock stratum below a water surface, liquid CO 2 is filled in the fracturing pipe and is connected with a fracturing control system, and after the fracturing controlsystem sends out a control instruction, the fracturing pipe is heated instantly to enable liquid CO 2 to complete phase change fracturing so as to break the rock stratum; and the data acquisition device is arranged outside the rock stratum and at the radial position of the fracturing pipe and is used for acquiring water shock wave pressures at a plurality of positions when the rock stratum is cracked. The system and method for testing the biological effect of water under supercritical CO 2 phase change pulse, provided by the invention, have the advantages that: the water shock wave generatedwhen the rock stratum is c