The work aims to clarify the precision difference between Cargo Bodyguard (a lite-performance shock recorder) and SAVER (a high-performance road spectrometer) on data measurement through comparative tests. Firstly, the calculation theories of the package drop height based on the drop shock state were studied. Secondly, a testing package was designed for the free fall tests in laboratory. The experimental data were measured by Cargo Bodyguard and SAVER, respectively. Thirdly, data analyses were conducted to determine the relationship between peak acceleration and drop height for Cargo Bodyguard and the restitution coefficient of packaging materials for SAVER. Finally, an actual transportation test was carried out. The drop heights were calculated respectively based on the two instruments and thus the reliability of the data measurement accuracy of the lite-performance shock recorder was analyzed. The drop height analysis indicated that, the drop heights based on Cargo Bodyguard were lower than those based on SAVER, and the former was in the dangerous zone of data analysis. Moreover, data of Cargo Bodyguard showed a “data-gather” issue that meant collecting precision of such instrument was not admirable. The reliability analysis showed that the two instruments had almost the same drop height when the cumulative probability was bigger than 90%. In addition, the cumulative probabilities were nearly 100% when the drop height calculated by two kinds of equipment was greater than 20 cm. Although the data measured by Cargo Bodyguard are monotonous and the data precision is different from the high-performance instruments, the drop height converted from Cargo Bodyguard is reliable, and can be used in the transportation packaging design.