Hydraulic fracturing crustal stress measuring apparatus

The utility model provides a hydraulic fracturing crustal stress measuring apparatus, comprising an inner high pressure expansion capsule and an outer high pressure expansion capsule, the outer high pressure expansion capsule is fixedly provided with a steel pipe therein traversing inward the outer high pressure expansion capsule to the out wall of the inner high pressure expansion capsule, the steel pipe section between the inner and outer high pressure expansion capsules is provided with a plurality of pressure injection holes, and a helical form fine copper pipe is winded on the steel section, the external of the outer high pressure expansion capsule is provided with a hydraulic fast joint, the hydraulic fast joint is connected with high pressure pipelines providing pressure for the outer high pressure expansion capsule and a measuring section L, the high pressure pipeline providing pressure for the measuring section L is in a parallel connection with a pressure sensor and a flow sensor connected to a data recording instrument, the data recording instrument is connected with the computer; two high pressure pipelines are respectively connected with a pumping station. and inject hydraulic pressure to a high pressure expansion hose, the high pressure expansion hose expands quickly until forming a sealing state with a hole wall, and then inject high pressure water to the measuring section L to cause fracturing, hydraulic pressure and flow data can be monitored.