This study is conducted on the smoke pot (KM5), which are used to conceal troops and military supplies for protection of the Army. During the operation, the smoke screen of smoke pot is closely related to survival of combatants. Since the smoke pot cannot be used once the smoke screen is released, the performance of the smoke pot cannot be confirmed until it is tested. Considering such a characteristic, Ammunition Stockpile Reliability Program (ASRP) is performed during the storage period to confirm the reliability of the smoke pot. In this study, using the test data of ASRP conducted from 2007 to 2021, the reliability and shelf-life of smoke pot are estimated based on the analysis results of misfire, ignition delay time and smoke emission time. For this, reliability is analyzed according to different classes of defects, and the changes in smoke emission time and ignition delay time are examined. Finally, the reliability and shelf-life of the smoke pot are estimated by synthesizing the results of each analysis. It is expected that the study can be used for ASRP of similar items in the future.