Abstract: In order to determine whether CNP gunpowder can meet the requirements of the lunar sample sealing task,Study the output force of it under vacuum and different temperature environmental conditions.Aimed at the problem of gunpowder in high temperature environment test,put forward the method to test the actuator output force.The results show that CPN gunpowder has a wide range of working temperature,stable output force,good consistency and has the ability to adapt to adapt to vacuum environment,which can meet the requirements of the lunar sample sealing task.