The invention discloses a petroleum pipe multi-parameter measuring device and an application method thereof, and belongs to the technical field of petroleum pipe detection. The petroleum pipe multi-parameter measuring device comprises a measurer base; gas is injected in an inner wall pit detecting fit airbag through an air pump air compressor; an inner wall pit detecting touch circuit in the innerwall pit detecting fit airbag is tightly bonded with the inner walls of pipes; position information in the contacted places between the inner wall pit detecting fit airbag and the inner walls of thepipes is recorded; pipe inner wall pit areas cannot be bonded with the inner wall pit detecting fit airbag, so that the pit areas cannot be recorded; a quicker and more accurate pipe data informationacquiring method for detecting abnormal pit and wear places on the inner walls of the pipe bodies to be measured can be realized; and the positions of the abnormal pit and wear places are accurately obtained, so that technicist can conveniently and comprehensively master the data information of the pipes to be measured, and the pipe detecting accuracy is improved when the pipe detecting efficiencyis greatly improved.