Electrostatic protection is the rigid requirement of missile development.Described the main ways of electrostatic charge deposition in missile;introduced three typical forms of missile electrostatic discharge;analyzed the different effects of electrostatic discharge current effect and electrostatic discharge electromagnetic pulse effect on the sensor radiation signal and system signal-to-noise ratio of missile;studied the effects of electrostatic dischargers on the safety and functional performance of missile;introduced the typical application of electrostatic dischargers,proved the necessity of installing electrostaic protective device in missile.