The invention relates to a pipeline steel drop hammer tearing specimen gas medium cooling method. Heating and cooling are carried out in a sealed container, and measures are taken in the container to ensure that the difference between each effective space temperature in the container and the test target temperature does not exceed 1 DEG C; a specimen, the temperature of which is same as the room temperature, is placed in the sealed container, and the shortest heat insulation time is set according to a table 1; the shortest retention time of the specimen in the table 1 in a gas medium can be used for guiding the normality of a pipeline steel drop hammer test and has a certain significance for ensuring the accuracy and the reliability of the test data; and the pipeline steel drop hammer tearing specimen gas medium cooling method provides a basis for formalizing the drop hammer test standard.