The utility model provides a shale gas loss speed measuring device, includes gas cylinder and mass flow meter to through pipe connection to the gas bottle of valve and external pressure gauge, anotherinterface of gas bottle meets through pipe and valve and the glass that tests the speed pipe, the other end of the glass that tests the speed pipe loops through pipe and valve and exhaust and meets with gas bottle, another interface of gas bottle and atmosphere intercommunication, and the weight hangs in the glass socle portion that tests the speed and the angulometer is used for the inclinationto measure, and measuring device front parallel placement is shot with video -corder the appearance and is used for loss speed to measure. The utility model discloses but the change rule of shale gasloss speed under the relation of assay stratigraphic dip angle and shale gas loss speed and the different physical attribute has remedied shale gas loss speed laboratory measuring means's shortage, with rock stratum replacement for liquid medium to in slowly letting in the glass delivery tube that tests the speed who fills liquid medium with the methane gas body, through surveing the migration speed of bubble in the pipe, the loss speed of the indirect measurement methane gas body.