In order to improve static electrical testing efficiency of missiles and rockets, a general static electrical testing box, considering characteristics of band switch and key board switch as well as two-line method and Calvin’s four-line method, was designed, followed by its design process. The generality was verified for different kinds of missiles and rockets. Additionally, taking one missile as an example, a test was carried out to compare designed testing box and manual detection method. The series of tests show that the designed static electrical testing box can implement static electrical testing for different kinds of missiles and rockets, with a better testing efficiency and precision than manual detection method.