The invention relates to a flight control method and an aircraft. The method is applied to the aircraft. The aircraft comprises n height sensors for collecting height data of the aircraft, wherein n is a positive integer which is greater than or equal to 2. The method comprises the following steps: acquiring a target flight height of the aircraft; acquiring the height data collected by the n height sensors; fusing the height data of the n height sensors to obtain a first fused height; calculating a first height error according to the first fused height and the target flight height; and adjusting the flight height of the aircraft according to the first height error. By adopting the scheme, the true flight height of the current aircraft can be acquired, and the data accuracy is higher; therefore, when the first height error is calculated, an eclectic first height error can be obtained, so that frequent height jittering is avoided when the flight height is adjusted according to the first height error.