This paper is mainly about delay characteristics of actuator in quasi-body coordinate system of dual-channel control spinning missile with the canard deployment of "+". The relationship between the delay characteristics of the actuator and the delay characteristics of the actuator in quasi-body coordinate system wais worked out in order to provide more convenience for the control of the missile in quasi-body coordinate system. Calculation and experiment show that at a constant rotation speed of the projectile, the time-delay of the actuator in quasi-body coordinate system is approximated to that at the spinning frequency of the projectile when the signal of the deflection angle of the actuator is constant or in low frequency, but when the signal becomes in high frequency, experiment is needed to measure the time-delay of the actuator for strong nonlinear of the actuator.