Flight plan generation method and device for solving prohibited navigation conflict and medium

The invention discloses a flight plan generation method and device for solving a prohibited flight conflict and a medium. The method comprises the following steps: collecting route limitation information, calculating position state information of a flight plan, and judging whether the flight plan of an original prohibited flight route and the flight plan of a temporary revised flight route have the prohibited flight conflict or not; if the prohibited flight conflict exists, the feasibility of each variable-speed flight plan is judged under the variable-speed flight condition, and a feasible variable-speed flight plan is obtained; and calculating flight elements of each feasible variable-speed flight plan, and outputting the feasible variable-speed flight plan meeting the conditions as an optimal variable-speed flight plan. According to the method, the flight speed of each flight section in the flight plan is adjusted under the variable-speed flight condition, so that the problem of prohibited flight conflict