The work aims to design a kind of airborne shells packaging box, small aerial ammunition fuze and packaging airtight detection system based on LabVIEW for making up the shortcomings of airtight detection of airborne shells packaging box. The packaging to be inspected was placed in the sealed box on the testing platform, and the PLC controller was used as the lower computer to control the inflator pump and the gas solenoid valve. First, the gas was inflated into the sealed box, and the pressure was kept for a period of time when reaching the set pressure. The gas pressure signal in the box was collected by the gas pressure sensor and then sent to the USB data acquisition card after conditioned, and transmitted to the upper computer with LabVIEW as the development platform. Then, the collected signals were stored, processed and displayed. Two packing boxes were pre-selected for verification and placed in No.1 and No.2 sealed boxes. The pressure drop rates were 13.82% and 3.45%, respectively. After analysis, when the pressure drop rate was φ＞5%, the packing lost sealing property, so the sealing property of No.1 packing box was poor and that of No.2 sealing was judged to be good. The test system based on LabVIEW has the characteristics of high automation, strong expansibility and easiness in construction, which has certain significance for improving the support efficiency of aerial ammunition.