Ammunition is a one-shot device, and propellants add momentum to fly the ammunition to the target point, which is manufactured using nitric acid ester compounds. Ammunition is inevitable for long-term storage, and nitric acid ester compounds tend to spontaneously decompose and self-ignite over time due to various environmental factors (humidity, direct sunlight, heat, and acidic substances). To suppress and delay the natural decomposition and the automatic catalyst reaction of the propellant, a stabilizer is added so that the safety life of the propellant is closely related to the amount of the stabilizer consumed by reaction with nitrogen oxide. In Korea, the Defense Agency for Technology and Quality has been designated by the Ministry of National Defense as an ASRP(Ammunition Stockpile Reliability Program) unit, which conducts ASRP to ensure the performance and storage stability of ammunition stored in the military. This study introduces a heat stability test method that can be used in parallel with the existing steam distillation method for single base propellants to quickly determine dangerous samples (less than 0.3% stabilizer content) among ASRP samples for the year and dispose of them immediately.