The invention relates to a dry-type hollow shunt reactor low-temperature through-flow simulation test system and a test method thereof, wherein the system comprises a dry-type wall bushing, a low-temperature cabinet, a current transformer and a current generator, wherein the dry-type hollow shunt reactor is arranged in the low-temperature cabinet; a temperature sensor connected with a contact typetemperature measuring instrument and a stress sensor connected with a strain demodulator are arranged between winding turns of the dry-type hollow shunt reactor and on the surface of an inner envelope and an outer envelope; one end of the dry-type wall bushing extends into the low-temperature cabinet and is connected with one end of the dry-type hollow shunt reactor, the other end of the dry-typewall bushing is connected with the output end of the current generator; and the outgoing line at the other end of the dry type hollow shunt reactor passes through the current transformer and is connected with the input end of the current generator. The dry-type hollow shunt reactor low-temperature through-flow simulation test system and the test method thereof can provide direct test data for thegeneration of the encapsulation cracks of the dry type hollow shunt reactor, and has very important significance for the research and exploration of the encapsulation insulation state of low-temperature operation.