Owing to the effect of crosswind, initial disturbance and the deviation of engine parameters.etc in the initial aviation, vari- able rolling velocity aerocraft will produce attitude angle deviation in the ideal orientations. This paper adopts AVR microcontroller atmega16 and relevant signal process circuit to design the attitude controller and take the method of frequency discrimination and am- plitude discrimination to process attitude angle deviation of aerocraft. Accordingly, it amends attitude angle deviation of aerocraft ef- fect and implements the self- adapting attitude control of aerocraft’s rolling velocity. Owing to the effect of crosswind, initial disturbance and the deviation of engine parameters. Etc in the initial aviation, vari- able rolling velocity aerocraft will produce attitude deviation deviation in the ideal orientations. This paper employs AVR microcontroller atmega16 and relevant signal process circuit to design the attitude controller and take the method of frequency discrimination and am- plitude discrimination to process a deviation attitude of aerocraft. it, it amends attitude angle deviation of aerocraft ef- fect and implements the self- adapting attitude control of aerocraft's rolling velocity.