This paper presents two novel longitudinal gust load alleviation schemes combined the conventional control augmentation stability, direct overload compensation and control allocation method. The direct overload compensation technique is proposed to straightforwardly offset the additional gust-caused overload using the extra effectors except the elevator. The greatest superiority of this method is that it plays a patch role to the original flight control system. In other words, it does not need to redesign the structure of the existing original flight control system. Control allocation method converts the previous controller solved virtual control signals into actuator commands. To synchronously regulate the longitudinal states and the residual normal overload, two kinds of reasonable virtual control allocation objects based on gust mitigation task are proposed. To compare the control effects of different control schemes under the same wind, four kinds of simulation are realized. The results show that the proposed gust load alleviation controllers have good regulation and wind resistance ability.