Quick, accurate, and anti-disturbance roll attitude control is one of the key technologies of automatic landing control system design for air buses.Based on nonlinear mathematical model of Boeing707 under constant crosswind disturbance, the linear model was obtained by trim and linearization, and the attitude control law for approach and landing was designed.Considering that it's difficult to realize rapid and stable response of roll angle with PID control method, we designed a robust H∞ control law.The two methods were analyzed on their capability of tracking roll attitude command and anti-crosswind disturbance.Simulation results indicated state feedback H∞ controller can achieve quick, accurate and no overshoot roll attitude control, and has ability of faster recovery, better riding quality and larger control redundancy of restraining crosswind disturbance.