Introduction: Shape memory alloy applied to aviation and space devices, can be used in military aircraft hydraulic system in the low temperature with the connection, can also be used to make the moon antenna to explore the mystery of the universe , People use shape memory alloy to make good antenna in high temperature environment, and then at low temperatures it is compressed into a small iron ball, so that its size reduced to the original one thousandth, it is easy to transport the moon, the sun's strong radiation to restore its original shape, according to the demand to sends back precious cosmic information to the earth. In addition, a shape memory releasing device for opening the container is used in the satellite for protecting the sensitive germanium detector from contamination during assembly and launch.