Large attitude manoeuvring the amplitude of which ranges from 0°to 180°it is necessary to carried out. The pitch channel can be used in the process of manoeuvre，and the other two are required for attitude stabilization，because all three channels are interreactive in attitude motion generally. In this paper a phase-plan on-off curve and corresponding attitude control law are designed and used in both attitude maneouvre and attitude stabilization. The resu1ts of mathematical simulation shows that the accuracies of attitude control meet the design requirement as long as the parameters of attitude control curve are rationally chosen.