The pull-out pin based on shape memory polymer composite material utilizes the variable stiffness and shape memory effect of the shape memory locking layer to achieve structural locking and release, with advantages such as simple structure, low impact, reusability, and high reliability. The locking state of the locking plate layer is in a straight shape, which can achieve a large axial locking force; After unfolding, it forms an Ω shape and can provide a large release stroke.

The pull-out pin of shape memory polymer composite material can be applied to situations such as locking and releasing of spatial deployment mechanisms, separation of satellite and other mechanisms.